4.0.220.0

4.0.220.0 (2026-03-27 18:14 UTC)

• BedrockAgentCore (4.0.14.0)
  • Adding AgentCore Code Interpreter Node.js Runtime Support with an optional runtime field
• BedrockAgentCoreControl (4.0.24.0)
  • Adds support for custom code-based evaluators using customer-managed Lambda functions.
• Neptunedata (4.0.4.6)
  • Minor formatting changes to remove unnecessary symbols.
• Omics (4.0.7.0)
  • AWS HealthOmics now supports VPC networking, allowing users to connect runs to external resources with NAT gateway, AWS VPC resources, and more. New Configuration APIs support configuring VPC settings. StartRun API now accepts networkingMode and configurationName parameters to enable VPC networking.
• Core 4.0.3.24
  • Fixed HttpContentRequestStreamHandle to cancel SerializeToStreamAsync on dispose, preventing background event consumption that could drain the event publisher and cause retries to hang.
  • Fixed SignatureDoesNotMatch errors for event stream requests (e.g., Transcribe Streaming) under concurrency by preventing SDK-level retries for event stream requests. The event publisher is a forward-only stream that cannot be rewound, and the AWS4EventSigner signature chain cannot be reset after events are signed during a failed attempt. Operation-level errors such as throttling are now surfaced to the caller for application-level retry.
  • All service and extension packages updated to require new Core

4.0.219.0

4.0.219.0 (2026-03-26 18:15 UTC)

• BCMDataExports (4.0.3.0)
  • With this release we are providing an option to accounts to have their export delivered to an S3 bucket that is not owned by the account.
• CloudWatchLogs (4.0.16.0)
  • This release adds parameter support to saved queries in CloudWatch Logs Insights. Define reusable query templates with named placeholders, invoke them using start query. Available in Console, CLI and SDK
• ElasticMapReduce (4.0.9.0)
  • Add StepExecutionRoleArn to RunJobFlow API
• SageMaker (4.0.47.0)
  • Release support for ml.r5d.16xlarge instance types for SageMaker HyperPod
• TimestreamInfluxDB (4.0.6.0)
  • Timestream for InfluxDB adds support for customer defined maintenance windows. This allows customers to define maintenance schedule during resource creation and updates
• Core 4.0.3.23
  • Fixed concurrent HTTP/2 event streaming requests (e.g., Amazon Transcribe Streaming) failing with SignatureDoesNotMatch and REFUSED_STREAM errors. The SDK now creates a dedicated HttpClient for each bidirectional event stream request to prevent HTTP/2 multiplexing, which is not supported by services like Amazon Transcribe Streaming that require one connection per stream.
  • All service and extension packages updated to require new Core

3.7.1251.0

3.7.1251.0 (2026-03-26 18:16 UTC)

• BCMDataExports (3.7.503.0)
  • With this release we are providing an option to accounts to have their export delivered to an S3 bucket that is not owned by the account.
• CloudWatchLogs (3.7.509.0)
  • This release adds parameter support to saved queries in CloudWatch Logs Insights. Define reusable query templates with named placeholders, invoke them using start query. Available in Console, CLI and SDK
• ElasticMapReduce (3.7.507.0)
  • Add StepExecutionRoleArn to RunJobFlow API
• SageMaker (3.7.533.0)
  • Release support for ml.r5d.16xlarge instance types for SageMaker HyperPod
• TimestreamInfluxDB (3.7.505.0)
  • Timestream for InfluxDB adds support for customer defined maintenance windows. This allows customers to define maintenance schedule during resource creation and updates
• Core 3.7.500.95
  • Updating endpoints.json file.
  • All services packages updated to require new Core

4.0.218.0

4.0.218.0 (2026-03-25 18:14 UTC)

• ApiGatewayV2 (4.0.5.0)
  • Added DISABLE IN PROGRESS and DISABLE FAILED Portal statuses.
• ApplicationSignals (4.0.6.0)
  • This release adds support for creating SLOs on RUM appMonitors, Synthetics canaries and services.
• Batch (4.0.8.1)
  • Documentation-only update for AWS Batch.
• MarketplaceAgreement (4.0.4.0)
  • The Variable Payments APIs enable AWS Marketplace Sellers to perform manage their payment requests (send, get, list, cancel).
• Polly (4.0.6.0)
  • Add support for Mu-law and A-law codecs for output format
• S3 (4.0.19.2)
  • Update docs for Amazon.S3.Transfer.ITransferUtility.OpenStreamWithResponse to add performance tips
• Uxc (4.0.0.0)
  • GA release of AccountCustomizations, used to manage account color, visible services, and visible regions settings in the AWS Management Console.
• Core 4.0.3.22
  • Optimize ParameterCollection sorting by leveraging ArrayPool for reduced allocations.

3.7.1250.0

3.7.1250.0 (2026-03-25 18:15 UTC)

• ApiGatewayV2 (3.7.504.0)
  • Added DISABLE IN PROGRESS and DISABLE FAILED Portal statuses.
• ApplicationSignals (3.7.506.0)
  • This release adds support for creating SLOs on RUM appMonitors, Synthetics canaries and services.
• Batch (3.7.506.1)
  • Documentation-only update for AWS Batch.
• MarketplaceAgreement (3.7.504.0)
  • The Variable Payments APIs enable AWS Marketplace Sellers to perform manage their payment requests (send, get, list, cancel).
• Polly (3.7.506.0)
  • Add support for Mu-law and A-law codecs for output format
• Uxc (3.7.500.0)
  • GA release of AccountCustomizations, used to manage account color, visible services, and visible regions settings in the AWS Management Console.

4.0.217.0

4.0.217.0 (2026-03-24 18:16 UTC)

• BedrockAgentCoreControl (4.0.23.0)
  • Adds SDK support for 1) Persist session state in AgentCore Runtime via filesystemConfigurations in CreateAgentRuntime, UpdateAgentRuntime, and GetAgentRuntime APIs, 2) Optional name-based filtering on AgentCore ListBrowserProfiles API.
• ConnectCases (4.0.12.1)
  • Tags on TagResourceRequest is allowed to contain null values
• GameLift (4.0.7.4)
  • Amazon GameLift Servers launches UDP ping beacons in the Beijing and Ningxia (China) Regions to help measure real-time network latency for multiplayer games. The ListLocations API is now available in these regions to provide endpoint domain and port information as part of the locations list.
• MediaPackageV2 (4.0.11.0)
  • Reduces the minimum allowed value for startOverWindowSeconds from 60 to 0, allowing customers to effectively disable the start-over window.
• OpenSearchServerless (4.0.7.0)
  • Adds support for updating the vector options field for existing collections.
• PCS (4.0.13.0)
  • This release adds support for custom slurmdbd and cgroup configuration in AWS PCS. Customers can now specify slurmdbd and cgroup settings to configure database accounting and reporting for their HPC workloads, and control resource allocation and limits for compute jobs.
• RDS (4.0.19.0)
  • Adds support in Aurora PostgreSQL serverless databases for express configuration based creation through WithExpressConfiguration in CreateDbCluster API, and for restoring clusters using RestoreDBClusterToPointInTime and RestoreDBClusterFromSnapshot APIs.
• Extensions.CborProtocol (4.0.0.29)
  • Unmarshall null values in CBOR maps.

3.7.1249.0

3.7.1249.0 (2026-03-24 18:17 UTC)

• BedrockAgentCoreControl (3.7.523.0)
  • Adds SDK support for 1) Persist session state in AgentCore Runtime via filesystemConfigurations in CreateAgentRuntime, UpdateAgentRuntime, and GetAgentRuntime APIs, 2) Optional name-based filtering on AgentCore ListBrowserProfiles API.
• GameLift (3.7.506.9)
  • Amazon GameLift Servers launches UDP ping beacons in the Beijing and Ningxia (China) Regions to help measure real-time network latency for multiplayer games. The ListLocations API is now available in these regions to provide endpoint domain and port information as part of the locations list.
• MediaPackageV2 (3.7.507.0)
  • Reduces the minimum allowed value for startOverWindowSeconds from 60 to 0, allowing customers to effectively disable the start-over window.
• OpenSearchServerless (3.7.506.0)
  • Adds support for updating the vector options field for existing collections.
• PCS (3.7.509.0)
  • This release adds support for custom slurmdbd and cgroup configuration in AWS PCS. Customers can now specify slurmdbd and cgroup settings to configure database accounting and reporting for their HPC workloads, and control resource allocation and limits for compute jobs.
• RDS (3.7.515.0)
  • Adds support in Aurora PostgreSQL serverless databases for express configuration based creation through WithExpressConfiguration in CreateDbCluster API, and for restoring clusters using RestoreDBClusterToPointInTime and RestoreDBClusterFromSnapshot APIs.

4.0.216.0

4.0.216.0 (2026-03-23 18:18 UTC)

• Batch (4.0.8.0)
  • AWS Batch AMI Visibility feature support. Adds read-only batchImageStatus to Ec2Configuration to provide visibility on the status of Batch-vended AMIs used by Compute Environments.
• ConnectCases (4.0.12.0)
  • You can now use the UpdateRelatedItem API to update the content of comments and custom related items associated with a case.
• DynamoDBv2 (4.0.17.1)
  • Fix Key Expression issue with renamable sort keys.
  • Extend Expression Builder for Projection expressions.
• Lightsail (4.0.5.0)
  • Add support for tagging of ContactMethod resource type
• Omics (4.0.6.0)
  • Adds support for batch workflow runs in Amazon Omics, enabling users to submit, manage, and monitor multiple runs as a single batch. Includes APIs to create, cancel, and delete batches, track submission statuses and counts, list runs within a batch, and configure default settings.
• Core 4.0.3.21
  • Render and XML doc tags as styled noteblock divs in the SDK reference documentation generator.

3.7.1248.0

3.7.1248.0 (2026-03-23 18:19 UTC)

• Batch (3.7.506.0)
  • AWS Batch AMI Visibility feature support. Adds read-only batchImageStatus to Ec2Configuration to provide visibility on the status of Batch-vended AMIs used by Compute Environments.
• ConnectCases (3.7.510.0)
  • You can now use the UpdateRelatedItem API to update the content of comments and custom related items associated with a case.
• Lightsail (3.7.505.0)
  • Add support for tagging of ContactMethod resource type
• Omics (3.7.505.0)
  • Adds support for batch workflow runs in Amazon Omics, enabling users to submit, manage, and monitor multiple runs as a single batch. Includes APIs to create, cancel, and delete batches, track submission statuses and counts, list runs within a batch, and configure default settings.

4.0.215.0

4.0.215.0 (2026-03-20 18:24 UTC)

• Backup (4.0.10.14)
  • Fix Typo for S3Backup Options ( S3BackupACLs to BackupACLs)
• DynamoDBv2 (4.0.17.0)
  • Adding ReplicaArn to ReplicaDescription of a global table replica
• OpenSearchService (4.0.13.0)
  • Added support for Amazon Managed Service for Prometheus (AMP) as a connected data source in OpenSearch UI. Now users can analyze Prometheus metrics in OpenSearch UI without data copy.
• VerifiedPermissions (4.0.7.0)
  • Adds support for Policy Store Aliases, Policy Names, and Policy Template Names. These are customizable identifiers that can be used in place of Policy Store ids, Policy ids, and Policy Template ids respectively in Amazon Verified Permissions APIs.