diff --git a/.changelog/5403c75d8e694cd8b0958a974522fb2a.json b/.changelog/5403c75d8e694cd8b0958a974522fb2a.json
new file mode 100644
index 00000000000..358c8d2aa18
--- /dev/null
+++ b/.changelog/5403c75d8e694cd8b0958a974522fb2a.json
@@ -0,0 +1,8 @@
+{
+    "id": "5403c75d-8e69-4cd8-b095-8a974522fb2a",
+    "type": "feature",
+    "description": "Adding Precision Hardware Clock (PHC) to public API DescribeInstanceTypes",
+    "modules": [
+        "service/ec2"
+    ]
+}
\ No newline at end of file
diff --git a/.changelog/94be5f35497b423fbe2efdedaa9201d1.json b/.changelog/94be5f35497b423fbe2efdedaa9201d1.json
new file mode 100644
index 00000000000..e5549aaf535
--- /dev/null
+++ b/.changelog/94be5f35497b423fbe2efdedaa9201d1.json
@@ -0,0 +1,8 @@
+{
+    "id": "94be5f35-497b-423f-be2e-fdedaa9201d1",
+    "type": "feature",
+    "description": "Add EXTERNAL_PROVIDER enum value to UserStatusType.",
+    "modules": [
+        "service/cognitoidentityprovider"
+    ]
+}
\ No newline at end of file
diff --git a/.changelog/9bbf00a58785417da92a797c7539041f.json b/.changelog/9bbf00a58785417da92a797c7539041f.json
new file mode 100644
index 00000000000..4cf7c223ff7
--- /dev/null
+++ b/.changelog/9bbf00a58785417da92a797c7539041f.json
@@ -0,0 +1,8 @@
+{
+    "id": "9bbf00a5-8785-417d-a92a-797c7539041f",
+    "type": "feature",
+    "description": "This release adds pull through cache rules support for GitLab container registry in Amazon ECR.",
+    "modules": [
+        "service/ecr"
+    ]
+}
\ No newline at end of file
diff --git a/.changelog/a9deac3400b0495d8c5f5d12863bf7a1.json b/.changelog/a9deac3400b0495d8c5f5d12863bf7a1.json
new file mode 100644
index 00000000000..9a401456152
--- /dev/null
+++ b/.changelog/a9deac3400b0495d8c5f5d12863bf7a1.json
@@ -0,0 +1,8 @@
+{
+    "id": "a9deac34-00b0-495d-8c5f-5d12863bf7a1",
+    "type": "feature",
+    "description": "Add new engine - generative - that builds the most expressive conversational voices.",
+    "modules": [
+        "service/polly"
+    ]
+}
\ No newline at end of file
diff --git a/.changelog/cb8efff42e4e46de8c14f882068aabea.json b/.changelog/cb8efff42e4e46de8c14f882068aabea.json
new file mode 100644
index 00000000000..2ff94fad9ec
--- /dev/null
+++ b/.changelog/cb8efff42e4e46de8c14f882068aabea.json
@@ -0,0 +1,8 @@
+{
+    "id": "cb8efff4-2e4e-46de-8c14-f882068aabea",
+    "type": "feature",
+    "description": "This release adds MessageSystemAttributeNames to ReceiveMessageRequest to replace AttributeNames.",
+    "modules": [
+        "service/sqs"
+    ]
+}
\ No newline at end of file
diff --git a/.changelog/dc51d77965884e8cbeec8f2586637890.json b/.changelog/dc51d77965884e8cbeec8f2586637890.json
new file mode 100644
index 00000000000..4a8a1037316
--- /dev/null
+++ b/.changelog/dc51d77965884e8cbeec8f2586637890.json
@@ -0,0 +1,8 @@
+{
+    "id": "dc51d779-6588-4e8c-beec-8f2586637890",
+    "type": "documentation",
+    "description": "The policy scope resource tag is always a string value, either a non-empty string or an empty string.",
+    "modules": [
+        "service/fms"
+    ]
+}
\ No newline at end of file
diff --git a/service/cognitoidentityprovider/types/enums.go b/service/cognitoidentityprovider/types/enums.go
index e9b84006a5e..0ebf879ed82 100644
--- a/service/cognitoidentityprovider/types/enums.go
+++ b/service/cognitoidentityprovider/types/enums.go
@@ -814,6 +814,7 @@ const (
 	UserStatusTypeUnknown             UserStatusType = "UNKNOWN"
 	UserStatusTypeResetRequired       UserStatusType = "RESET_REQUIRED"
 	UserStatusTypeForceChangePassword UserStatusType = "FORCE_CHANGE_PASSWORD"
+	UserStatusTypeExternalProvider    UserStatusType = "EXTERNAL_PROVIDER"
 )
 
 // Values returns all known values for UserStatusType. Note that this can be
@@ -829,6 +830,7 @@ func (UserStatusType) Values() []UserStatusType {
 		"UNKNOWN",
 		"RESET_REQUIRED",
 		"FORCE_CHANGE_PASSWORD",
+		"EXTERNAL_PROVIDER",
 	}
 }
 
diff --git a/service/ec2/deserializers.go b/service/ec2/deserializers.go
index 5f8493e2559..dfe8701fef3 100644
--- a/service/ec2/deserializers.go
+++ b/service/ec2/deserializers.go
@@ -87670,6 +87670,19 @@ func awsEc2query_deserializeDocumentInstanceTypeInfo(v **types.InstanceTypeInfo,
 				sv.NitroTpmSupport = types.NitroTpmSupport(xtv)
 			}
 
+		case strings.EqualFold("phcSupport", t.Name.Local):
+			val, err := decoder.Value()
+			if err != nil {
+				return err
+			}
+			if val == nil {
+				break
+			}
+			{
+				xtv := string(val)
+				sv.PhcSupport = types.PhcSupport(xtv)
+			}
+
 		case strings.EqualFold("placementGroupInfo", t.Name.Local):
 			nodeDecoder := smithyxml.WrapNodeDecoder(decoder.Decoder, t)
 			if err := awsEc2query_deserializeDocumentPlacementGroupInfo(&sv.PlacementGroupInfo, nodeDecoder); err != nil {
diff --git a/service/ec2/types/enums.go b/service/ec2/types/enums.go
index fbc7fe3b3d7..6ab11c18077 100644
--- a/service/ec2/types/enums.go
+++ b/service/ec2/types/enums.go
@@ -6437,6 +6437,25 @@ func (PermissionGroup) Values() []PermissionGroup {
 	}
 }
 
+type PhcSupport string
+
+// Enum values for PhcSupport
+const (
+	PhcSupportUnsupported PhcSupport = "unsupported"
+	PhcSupportSupported   PhcSupport = "supported"
+)
+
+// Values returns all known values for PhcSupport. Note that this can be expanded
+// in the future, and so it is only as up to date as the client.
+//
+// The ordering of this slice is not guaranteed to be stable across updates.
+func (PhcSupport) Values() []PhcSupport {
+	return []PhcSupport{
+		"unsupported",
+		"supported",
+	}
+}
+
 type PlacementGroupState string
 
 // Enum values for PlacementGroupState
diff --git a/service/ec2/types/types.go b/service/ec2/types/types.go
index b3ea2a3f00a..5ab27ef5da5 100644
--- a/service/ec2/types/types.go
+++ b/service/ec2/types/types.go
@@ -8057,6 +8057,10 @@ type InstanceTypeInfo struct {
 	// Indicates whether NitroTPM is supported.
 	NitroTpmSupport NitroTpmSupport
 
+	// Indicates whether a local Precision Time Protocol (PTP) hardware clock (PHC) is
+	// supported.
+	PhcSupport PhcSupport
+
 	// Describes the placement group settings for the instance type.
 	PlacementGroupInfo *PlacementGroupInfo
 
diff --git a/service/ecr/api_op_CreatePullThroughCacheRule.go b/service/ecr/api_op_CreatePullThroughCacheRule.go
index fe862865f78..f4a173fedf8 100644
--- a/service/ecr/api_op_CreatePullThroughCacheRule.go
+++ b/service/ecr/api_op_CreatePullThroughCacheRule.go
@@ -57,6 +57,9 @@ type CreatePullThroughCacheRuleInput struct {
 	//   - Microsoft Azure Container Registry ( azure-container-registry ) -
 	//   .azurecr.io
 	//
+	//   - GitLab Container Registry ( gitlab-container-registry ) -
+	//   registry.gitlab.com
+	//
 	// This member is required.
 	UpstreamRegistryUrl *string
 
diff --git a/service/ecr/types/enums.go b/service/ecr/types/enums.go
index cbf22299402..78d66141a12 100644
--- a/service/ecr/types/enums.go
+++ b/service/ecr/types/enums.go
@@ -357,6 +357,7 @@ const (
 	UpstreamRegistryDockerHub               UpstreamRegistry = "docker-hub"
 	UpstreamRegistryGitHubContainerRegistry UpstreamRegistry = "github-container-registry"
 	UpstreamRegistryAzureContainerRegistry  UpstreamRegistry = "azure-container-registry"
+	UpstreamRegistryGitLabContainerRegistry UpstreamRegistry = "gitlab-container-registry"
 )
 
 // Values returns all known values for UpstreamRegistry. Note that this can be
@@ -371,5 +372,6 @@ func (UpstreamRegistry) Values() []UpstreamRegistry {
 		"docker-hub",
 		"github-container-registry",
 		"azure-container-registry",
+		"gitlab-container-registry",
 	}
 }
diff --git a/service/fms/api_op_PutPolicy.go b/service/fms/api_op_PutPolicy.go
index eac1aabdb4c..cc281aa96d4 100644
--- a/service/fms/api_op_PutPolicy.go
+++ b/service/fms/api_op_PutPolicy.go
@@ -58,7 +58,7 @@ import (
 //     advanced threat prevention, smart web application firewalls (WAF), and API
 //     protection.
 //
-// [Amazon Web Services Marketplace]: https://aws.amazon.com/marketplace
+// [Amazon Web Services Marketplace]: http://aws.amazon.com/marketplace
 func (c *Client) PutPolicy(ctx context.Context, params *PutPolicyInput, optFns ...func(*Options)) (*PutPolicyOutput, error) {
 	if params == nil {
 		params = &PutPolicyInput{}
diff --git a/service/fms/types/types.go b/service/fms/types/types.go
index 7b4b0a79480..3a68d39ac23 100644
--- a/service/fms/types/types.go
+++ b/service/fms/types/types.go
@@ -837,9 +837,9 @@ type NetworkAclEntrySet struct {
 	//
 	// If forced remediation is disabled, Firewall Manager marks the network ACL as
 	// noncompliant and does not try to remediate. For more information about the
-	// remediation behavior, see [Network access control list (ACL) policies]in the Firewall Manager Developer Guide.
+	// remediation behavior, see [Remediation for managed network ACLs]in the Firewall Manager Developer Guide.
 	//
-	// [Network access control list (ACL) policies]: https://docs.aws.amazon.com/waf/latest/developerguide/network-acl-policies.html
+	// [Remediation for managed network ACLs]: https://docs.aws.amazon.com/waf/latest/developerguide/network-acl-policies.html#network-acls-remediation
 	//
 	// This member is required.
 	ForceRemediateForFirstEntries *bool
@@ -850,9 +850,9 @@ type NetworkAclEntrySet struct {
 	//
 	// If forced remediation is disabled, Firewall Manager marks the network ACL as
 	// noncompliant and does not try to remediate. For more information about the
-	// remediation behavior, see [Network access control list (ACL) policies]in the Firewall Manager Developer Guide.
+	// remediation behavior, see [Remediation for managed network ACLs]in the Firewall Manager Developer Guide.
 	//
-	// [Network access control list (ACL) policies]: https://docs.aws.amazon.com/waf/latest/developerguide/network-acl-policies.html
+	// [Remediation for managed network ACLs]: https://docs.aws.amazon.com/waf/latest/developerguide/network-acl-policies.html#network-acls-remediation
 	//
 	// This member is required.
 	ForceRemediateForLastEntries *bool
@@ -1406,7 +1406,7 @@ type Policy struct {
 	//   “accountID2”], “ORG_UNIT” : [“ouid111”, “ouid112”]} .
 	IncludeMap map[string][]string
 
-	// The definition of the Network Firewall firewall policy.
+	// Your description of the Firewall Manager policy.
 	PolicyDescription *string
 
 	// The ID of the Firewall Manager policy.
@@ -1870,6 +1870,13 @@ type ResourceSetSummary struct {
 // add more than one tag to a policy scope, a resource must have all the specified
 // tags to be included or excluded. For more information, see [Working with Tag Editor].
 //
+// Every resource tag must have a string value, either a non-empty string or an
+// empty string. If you don't provide a value for a resource tag, Firewall Manager
+// saves the value as an empty string: "". When Firewall Manager compares tags, it
+// only matches two tags if they have the same key and the same value. A tag with
+// an empty string value only matches with tags that also have an empty string
+// value.
+//
 // [Working with Tag Editor]: https://docs.aws.amazon.com/awsconsolehelpdocs/latest/gsg/tag-editor.html
 type ResourceTag struct {
 
@@ -1878,7 +1885,8 @@ type ResourceTag struct {
 	// This member is required.
 	Key *string
 
-	// The resource tag value.
+	// The resource tag value. To specify an empty string value, either don't provide
+	// this or specify it as "".
 	Value *string
 
 	noSmithyDocumentSerde
diff --git a/service/polly/api_op_DescribeVoices.go b/service/polly/api_op_DescribeVoices.go
index 2f6456bf4ab..7a4d6e233b6 100644
--- a/service/polly/api_op_DescribeVoices.go
+++ b/service/polly/api_op_DescribeVoices.go
@@ -45,8 +45,8 @@ func (c *Client) DescribeVoices(ctx context.Context, params *DescribeVoicesInput
 
 type DescribeVoicesInput struct {
 
-	// Specifies the engine ( standard , neural or long-form ) used by Amazon Polly
-	// when processing input text for speech synthesis.
+	// Specifies the engine ( standard , neural , long-form or generative ) used by
+	// Amazon Polly when processing input text for speech synthesis.
 	Engine types.Engine
 
 	// Boolean value indicating whether to return any bilingual voices that use the
diff --git a/service/polly/api_op_StartSpeechSynthesisTask.go b/service/polly/api_op_StartSpeechSynthesisTask.go
index 754d58222f2..82a097ebde1 100644
--- a/service/polly/api_op_StartSpeechSynthesisTask.go
+++ b/service/polly/api_op_StartSpeechSynthesisTask.go
@@ -58,9 +58,9 @@ type StartSpeechSynthesisTaskInput struct {
 	// This member is required.
 	VoiceId types.VoiceId
 
-	// Specifies the engine ( standard , neural or long-form ) for Amazon Polly to use
-	// when processing input text for speech synthesis. Using a voice that is not
-	// supported for the engine selected will result in an error.
+	// Specifies the engine ( standard , neural , long-form or generative ) for Amazon
+	// Polly to use when processing input text for speech synthesis. Using a voice that
+	// is not supported for the engine selected will result in an error.
 	Engine types.Engine
 
 	// Optional language code for the Speech Synthesis request. This is only necessary
@@ -88,7 +88,8 @@ type StartSpeechSynthesisTaskInput struct {
 	//
 	// The valid values for mp3 and ogg_vorbis are "8000", "16000", "22050", and
 	// "24000". The default value for standard voices is "22050". The default value for
-	// neural voices is "24000". The default value for long-form voices is "24000".
+	// neural voices is "24000". The default value for long-form voices is "24000". The
+	// default value for generative voices is "24000".
 	//
 	// Valid values for pcm are "8000" and "16000" The default value is "16000".
 	SampleRate *string
diff --git a/service/polly/api_op_SynthesizeSpeech.go b/service/polly/api_op_SynthesizeSpeech.go
index 3ff4153df21..3b2a6333e17 100644
--- a/service/polly/api_op_SynthesizeSpeech.go
+++ b/service/polly/api_op_SynthesizeSpeech.go
@@ -59,34 +59,19 @@ type SynthesizeSpeechInput struct {
 	// This member is required.
 	VoiceId types.VoiceId
 
-	// Specifies the engine ( standard , neural or long-form ) for Amazon Polly to use
-	// when processing input text for speech synthesis. For information on Amazon Polly
-	// voices and which voices are available for each engine, see [Available Voices].
-	//
-	// NTTS-only voices
-	//
-	// When using NTTS-only voices such as Kevin (en-US), this parameter is required
-	// and must be set to neural . If the engine is not specified, or is set to
-	// standard , this will result in an error.
-	//
-	// long-form-only voices
-	//
-	// When using long-form-only voices such as Danielle (en-US), this parameter is
-	// required and must be set to long-form . If the engine is not specified, or is
-	// set to standard or neural , this will result in an error.
+	// Specifies the engine ( standard , neural , long-form , or generative ) for
+	// Amazon Polly to use when processing input text for speech synthesis. Provide an
+	// engine that is supported by the voice you select. If you don't provide an
+	// engine, the standard engine is selected by default. If a chosen voice isn't
+	// supported by the standard engine, this will result in an error. For information
+	// on Amazon Polly voices and which voices are available for each engine, see [Available Voices].
 	//
 	// Type: String
 	//
-	// Valid Values: standard | neural | long-form
+	// Valid Values: standard | neural | long-form | generative
 	//
 	// Required: Yes
 	//
-	// Standard voices
-	//
-	// For standard voices, this is not required; the engine parameter defaults to
-	// standard . If the engine is not specified, or is set to standard and an
-	// NTTS-only voice is selected, this will result in an error.
-	//
 	// [Available Voices]: https://docs.aws.amazon.com/polly/latest/dg/voicelist.html
 	Engine types.Engine
 
@@ -115,7 +100,8 @@ type SynthesizeSpeechInput struct {
 	//
 	// The valid values for mp3 and ogg_vorbis are "8000", "16000", "22050", and
 	// "24000". The default value for standard voices is "22050". The default value for
-	// neural voices is "24000". The default value for long-form voices is "24000".
+	// neural voices is "24000". The default value for long-form voices is "24000". The
+	// default value for generative voices is "24000".
 	//
 	// Valid values for pcm are "8000" and "16000" The default value is "16000".
 	SampleRate *string
diff --git a/service/polly/types/enums.go b/service/polly/types/enums.go
index 44335ddaad7..d3e379311bb 100644
--- a/service/polly/types/enums.go
+++ b/service/polly/types/enums.go
@@ -6,9 +6,10 @@ type Engine string
 
 // Enum values for Engine
 const (
-	EngineStandard Engine = "standard"
-	EngineNeural   Engine = "neural"
-	EngineLongForm Engine = "long-form"
+	EngineStandard   Engine = "standard"
+	EngineNeural     Engine = "neural"
+	EngineLongForm   Engine = "long-form"
+	EngineGenerative Engine = "generative"
 )
 
 // Values returns all known values for Engine. Note that this can be expanded in
@@ -20,6 +21,7 @@ func (Engine) Values() []Engine {
 		"standard",
 		"neural",
 		"long-form",
+		"generative",
 	}
 }
 
diff --git a/service/polly/types/types.go b/service/polly/types/types.go
index 92b222ca815..05b97a422a4 100644
--- a/service/polly/types/types.go
+++ b/service/polly/types/types.go
@@ -70,9 +70,9 @@ type SynthesisTask struct {
 	// Timestamp for the time the synthesis task was started.
 	CreationTime *time.Time
 
-	// Specifies the engine ( standard , neural or long-form ) for Amazon Polly to use
-	// when processing input text for speech synthesis. Using a voice that is not
-	// supported for the engine selected will result in an error.
+	// Specifies the engine ( standard , neural , long-form or generative ) for Amazon
+	// Polly to use when processing input text for speech synthesis. Using a voice that
+	// is not supported for the engine selected will result in an error.
 	Engine Engine
 
 	// Optional language code for a synthesis task. This is only necessary if using a
@@ -107,7 +107,8 @@ type SynthesisTask struct {
 	//
 	// The valid values for mp3 and ogg_vorbis are "8000", "16000", "22050", and
 	// "24000". The default value for standard voices is "22050". The default value for
-	// neural voices is "24000". The default value for long-form voices is "24000".
+	// neural voices is "24000". The default value for long-form voices is "24000". The
+	// default value for generative voices is "24000".
 	//
 	// Valid values for pcm are "8000" and "16000" The default value is "16000".
 	SampleRate *string
@@ -167,8 +168,8 @@ type Voice struct {
 	// readable voice name that you might display in your application.
 	Name *string
 
-	// Specifies which engines ( standard , neural or long-form ) are supported by a
-	// given voice.
+	// Specifies which engines ( standard , neural , long-form or generative ) are
+	// supported by a given voice.
 	SupportedEngines []Engine
 
 	noSmithyDocumentSerde
diff --git a/service/sqs/api_op_CancelMessageMoveTask.go b/service/sqs/api_op_CancelMessageMoveTask.go
index 9093f1e4cda..a29f51bff0c 100644
--- a/service/sqs/api_op_CancelMessageMoveTask.go
+++ b/service/sqs/api_op_CancelMessageMoveTask.go
@@ -20,8 +20,6 @@ import (
 //     destination queue can be the original source queue (from which the messages were
 //     driven to the dead-letter-queue), or a custom destination queue.
 //
-//   - Currently, only standard queues are supported.
-//
 //   - Only one active message movement task is supported per queue at any given
 //     time.
 //
diff --git a/service/sqs/api_op_ListMessageMoveTasks.go b/service/sqs/api_op_ListMessageMoveTasks.go
index ed689ef13d1..5f1608ea0f8 100644
--- a/service/sqs/api_op_ListMessageMoveTasks.go
+++ b/service/sqs/api_op_ListMessageMoveTasks.go
@@ -19,8 +19,6 @@ import (
 //     destination queue can be the original source queue (from which the messages were
 //     driven to the dead-letter-queue), or a custom destination queue.
 //
-//   - Currently, only standard queues are supported.
-//
 //   - Only one active message movement task is supported per queue at any given
 //     time.
 //
diff --git a/service/sqs/api_op_ReceiveMessage.go b/service/sqs/api_op_ReceiveMessage.go
index c0f04d29fbf..503ba0e87f3 100644
--- a/service/sqs/api_op_ReceiveMessage.go
+++ b/service/sqs/api_op_ReceiveMessage.go
@@ -83,6 +83,10 @@ type ReceiveMessageInput struct {
 	// This member is required.
 	QueueUrl *string
 
+	//  This parameter has been deprecated but will be supported for backward
+	// compatibility. To provide attribute names, you are encouraged to use
+	// MessageSystemAttributeNames .
+	//
 	// A list of attributes that need to be returned along with each message. These
 	// attributes include:
 	//
@@ -121,6 +125,8 @@ type ReceiveMessageInput struct {
 	// [SSE-KMS]: https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-configure-sse-existing-queue.html
 	// [epoch time]: http://en.wikipedia.org/wiki/Unix_time
 	// [SSE-SQS]: https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-configure-sqs-sse-queue.html
+	//
+	// Deprecated: AttributeNames has been replaced by MessageSystemAttributeNames
 	AttributeNames []types.QueueAttributeName
 
 	// The maximum number of messages to return. Amazon SQS never returns more
@@ -150,6 +156,46 @@ type ReceiveMessageInput struct {
 	// example bar.* .
 	MessageAttributeNames []string
 
+	// A list of attributes that need to be returned along with each message. These
+	// attributes include:
+	//
+	//   - All – Returns all values.
+	//
+	//   - ApproximateFirstReceiveTimestamp – Returns the time the message was first
+	//   received from the queue ([epoch time] in milliseconds).
+	//
+	//   - ApproximateReceiveCount – Returns the number of times a message has been
+	//   received across all queues but not deleted.
+	//
+	//   - AWSTraceHeader – Returns the X-Ray trace header string.
+	//
+	//   - SenderId
+	//
+	//   - For a user, returns the user ID, for example ABCDEFGHI1JKLMNOPQ23R .
+	//
+	//   - For an IAM role, returns the IAM role ID, for example
+	//   ABCDE1F2GH3I4JK5LMNOP:i-a123b456 .
+	//
+	//   - SentTimestamp – Returns the time the message was sent to the queue ([epoch time] in
+	//   milliseconds).
+	//
+	//   - SqsManagedSseEnabled – Enables server-side queue encryption using SQS owned
+	//   encryption keys. Only one server-side encryption option is supported per queue
+	//   (for example, [SSE-KMS]or [SSE-SQS]).
+	//
+	//   - MessageDeduplicationId – Returns the value provided by the producer that
+	//   calls the SendMessageaction.
+	//
+	//   - MessageGroupId – Returns the value provided by the producer that calls the SendMessage
+	//   action. Messages with the same MessageGroupId are returned in sequence.
+	//
+	//   - SequenceNumber – Returns the value provided by Amazon SQS.
+	//
+	// [SSE-KMS]: https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-configure-sse-existing-queue.html
+	// [epoch time]: http://en.wikipedia.org/wiki/Unix_time
+	// [SSE-SQS]: https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-configure-sqs-sse-queue.html
+	MessageSystemAttributeNames []types.MessageSystemAttributeName
+
 	// This parameter applies only to FIFO (first-in-first-out) queues.
 	//
 	// The token used for deduplication of ReceiveMessage calls. If a networking issue
@@ -164,9 +210,6 @@ type ReceiveMessageInput struct {
 	//   - When you set FifoQueue , a caller of the ReceiveMessage action can provide a
 	//   ReceiveRequestAttemptId explicitly.
 	//
-	//   - If a caller of the ReceiveMessage action doesn't provide a
-	//   ReceiveRequestAttemptId , Amazon SQS generates a ReceiveRequestAttemptId .
-	//
 	//   - It is possible to retry the ReceiveMessage action with the same
 	//   ReceiveRequestAttemptId if none of the messages have been modified (deleted or
 	//   had their visibility changes).
@@ -214,7 +257,7 @@ type ReceiveMessageInput struct {
 	// The duration (in seconds) for which the call waits for a message to arrive in
 	// the queue before returning. If a message is available, the call returns sooner
 	// than WaitTimeSeconds . If no messages are available and the wait time expires,
-	// the call returns successfully with an empty list of messages.
+	// the call does not return a message list.
 	//
 	// To avoid HTTP errors, ensure that the HTTP response timeout for ReceiveMessage
 	// requests is longer than the WaitTimeSeconds parameter. For example, with the
diff --git a/service/sqs/api_op_SendMessage.go b/service/sqs/api_op_SendMessage.go
index 63742e0e423..3ef3b1669ec 100644
--- a/service/sqs/api_op_SendMessage.go
+++ b/service/sqs/api_op_SendMessage.go
@@ -147,8 +147,8 @@ type SendMessageInput struct {
 	//   For each MessageGroupId , the messages are sorted by time sent. The caller
 	//   can't specify a MessageGroupId .
 	//
-	// The length of MessageGroupId is 128 characters. Valid values: alphanumeric
-	// characters and punctuation (!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~) .
+	// The maximum length of MessageGroupId is 128 characters. Valid values:
+	// alphanumeric characters and punctuation (!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~) .
 	//
 	// For best practices of using MessageGroupId , see [Using the MessageGroupId Property] in the Amazon SQS Developer
 	// Guide.
diff --git a/service/sqs/api_op_SetQueueAttributes.go b/service/sqs/api_op_SetQueueAttributes.go
index 4b0740733a4..fa3afb42dfc 100644
--- a/service/sqs/api_op_SetQueueAttributes.go
+++ b/service/sqs/api_op_SetQueueAttributes.go
@@ -10,9 +10,9 @@ import (
 	smithyhttp "github.com/aws/smithy-go/transport/http"
 )
 
-// Sets the value of one or more queue attributes. When you change a queue's
-// attributes, the change can take up to 60 seconds for most of the attributes to
-// propagate throughout the Amazon SQS system. Changes made to the
+// Sets the value of one or more queue attributes, like a policy. When you change
+// a queue's attributes, the change can take up to 60 seconds for most of the
+// attributes to propagate throughout the Amazon SQS system. Changes made to the
 // MessageRetentionPeriod attribute can take up to 15 minutes and will impact
 // existing messages in the queue potentially causing them to be expired and
 // deleted if the MessageRetentionPeriod is reduced below the age of existing
diff --git a/service/sqs/api_op_StartMessageMoveTask.go b/service/sqs/api_op_StartMessageMoveTask.go
index c279d24e730..b4ec61437a2 100644
--- a/service/sqs/api_op_StartMessageMoveTask.go
+++ b/service/sqs/api_op_StartMessageMoveTask.go
@@ -23,9 +23,6 @@ import (
 //     (from which the messages were driven to the dead-letter-queue), or a custom
 //     destination queue.
 //
-//   - Currently, only standard queues support redrive. FIFO queues don't support
-//     redrive.
-//
 //   - Only one active message movement task is supported per queue at any given
 //     time.
 //
diff --git a/service/sqs/serializers.go b/service/sqs/serializers.go
index ddac08da6a5..d93605345ee 100644
--- a/service/sqs/serializers.go
+++ b/service/sqs/serializers.go
@@ -1466,6 +1466,17 @@ func awsAwsjson10_serializeDocumentMessageBodySystemAttributeMap(v map[string]ty
 	return nil
 }
 
+func awsAwsjson10_serializeDocumentMessageSystemAttributeList(v []types.MessageSystemAttributeName, value smithyjson.Value) error {
+	array := value.Array()
+	defer array.Close()
+
+	for i := range v {
+		av := array.Value()
+		av.String(string(v[i]))
+	}
+	return nil
+}
+
 func awsAwsjson10_serializeDocumentMessageSystemAttributeValue(v *types.MessageSystemAttributeValue, value smithyjson.Value) error {
 	object := value.Object()
 	defer object.Close()
@@ -1907,6 +1918,13 @@ func awsAwsjson10_serializeOpDocumentReceiveMessageInput(v *ReceiveMessageInput,
 		}
 	}
 
+	if v.MessageSystemAttributeNames != nil {
+		ok := object.Key("MessageSystemAttributeNames")
+		if err := awsAwsjson10_serializeDocumentMessageSystemAttributeList(v.MessageSystemAttributeNames, ok); err != nil {
+			return err
+		}
+	}
+
 	if v.QueueUrl != nil {
 		ok := object.Key("QueueUrl")
 		ok.String(*v.QueueUrl)
diff --git a/service/sqs/types/enums.go b/service/sqs/types/enums.go
index 9982d1e56bc..230b83627f5 100644
--- a/service/sqs/types/enums.go
+++ b/service/sqs/types/enums.go
@@ -6,6 +6,7 @@ type MessageSystemAttributeName string
 
 // Enum values for MessageSystemAttributeName
 const (
+	MessageSystemAttributeNameAll                              MessageSystemAttributeName = "All"
 	MessageSystemAttributeNameSenderId                         MessageSystemAttributeName = "SenderId"
 	MessageSystemAttributeNameSentTimestamp                    MessageSystemAttributeName = "SentTimestamp"
 	MessageSystemAttributeNameApproximateReceiveCount          MessageSystemAttributeName = "ApproximateReceiveCount"
@@ -23,6 +24,7 @@ const (
 // The ordering of this slice is not guaranteed to be stable across updates.
 func (MessageSystemAttributeName) Values() []MessageSystemAttributeName {
 	return []MessageSystemAttributeName{
+		"All",
 		"SenderId",
 		"SentTimestamp",
 		"ApproximateReceiveCount",
diff --git a/service/sqs/types/types.go b/service/sqs/types/types.go
index 6aa87d5d0c1..5dade2c0d71 100644
--- a/service/sqs/types/types.go
+++ b/service/sqs/types/types.go
@@ -106,7 +106,8 @@ type ListMessageMoveTasksResultEntry struct {
 	ApproximateNumberOfMessagesMoved int64
 
 	// The number of messages to be moved from the source queue. This number is
-	// obtained at the time of starting the message movement task.
+	// obtained at the time of starting the message movement task and is only included
+	// after the message movement task is selected to start.
 	ApproximateNumberOfMessagesToMove *int64
 
 	// The ARN of the destination queue if it has been specified in the