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This is a list of key features/improvements/bugfixes that we can include with release notes (WIP):

• Efficient memory usage for down conversion Prefixed wildcard ACLs (KIP-290), Fine grained ACLs for CreateTopics (KIP-283)Additional functionality in AdminClient including consumer group management and config management277)
• SASL/OAUTHBEARER implementation (KIP-255)
• Improved quota communication and management customization of quotas (KIP-219, KIP-257)
• Efficient memory usage for down conversion (KIP-283)
• Fix log divergence between leader and follower during fast leader failover (KIP-279)
• Drop support for Java 7 and remove deprecated code (e.g old scala clients)
• Connect REST extension plugin, support for externalizing secrets and improved error handling (KIP-285, KIP-297, KIP-298 etc.)
• Scala API for Kafka Streams and other Streams API improvements (KIP-270, KIP-150, KIP-245, KIP-251 etc.)

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• Write more unit/integration/system tests. We want to preserve the tradition of high-quality releases in Apache Kafka.
• Improve documentation
• Test the release candidates
• Open blocker JIRAs on critical issues found. Open non-blocker JIRAs on any other issues found.
• Fix critical bugs
• Review bug fixes
• Vote on RCs. Even though only PMC votes are binding, community votes are super important as we evaluate the readiness of the release

Open Issues

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Also feel free to refer to this release page for more details of the included tickets.

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Note: The planned content is not binding - final content will be based the features committed by branch-cutting date. See Kafka Improvement Proposals for the full list of KIPs.

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Postponed to subsequent release