2.54.2 2026-08-21

AWS Backup

• Features

  • Updating CLI Docs for Backup Audit Manager List Job Summaries APIs.

AWS Device Farm

• Features

  • Added support to CreateRemoveAccessSession for selecting a server version on the mobile WebDriver endpoint.

AWS WAFV2

• Features

  • DataProtectionConfig field Key Documentation Update

Amazon Bedrock AgentCore

• Features

  • Increase spans count from 1k to 20k

Amazon Bedrock AgentCore Control

• Features

  • Update Dataset schema to THIRDPARTYEVALUATIONV1

Amazon CloudWatch

• Features

  • Allows customers to specify an initial warm up period to wait for metrics to arrive when creating metric or log alarms

Amazon Kinesis

• Features

  • Generate account endpoint for Kinesis Data Streams requests when the account ID is available

Netty NIO HTTP Client

• Features

  • Add support for Kerberos (SPNEGO) proxy authentication via the new proxyAuthScheme option on the Netty client's ProxyConfiguration. Setting ProxyAuthScheme.NEGOTIATE authenticates proxy CONNECT tunnels using the Kerberos ticket cache in the environment; a valid ticket-granting ticket must already exist (for example via kinit), and no password or keytab is read. ProxyAuthScheme.BASIC may also be set to select Basic authentication explicitly. See #7033.

• Bugfixes

  • Fix NettyNioAsyncHttpClient errors when making requests in GraalVM native images, which can lead to timeout exceptions.
  • Fixed a NullPointerException in HandlerSubscriber that could intermittently fail async requests (such as S3 PutObject/UploadPart) when a channel writability change occurred during the Expect: 100-continue window before the request body subscription was established. See #7271.