There is a new KIP-1244 proposing to deprecate the Kafka Streams Scala API, and remove it with the next major release.

Please join the discussion on the dev mailing list if this concerns you.

We are happy to share that the Apache Kafka 4.1.1 bug-fix release is now available!

It contains a critical memory-leak fix for #KafkaStreams and many other fixes. For details see https://kafka.apache.org/blog#apache_kafka_411_release_announcement

Thanks to 32 contributors and Lianet Magrans as our RM.

We are excited to announce the Apache Kafka 4.0.1 bug-fix release, containing over 40 fixes!

Thanks to 53 contributors and your RM Christo Lolov.

For more details, checkout the announcement:
https://kafka.apache.org/blog#apache_kafka_401_release_announcement

🚨Kafka Streams 4.1.0 contains a memory leak regression bug: https://issues.apache.org/jira/browse/KAFKA-19748

Be careful upgrading, or wait for 4.1.1 bug-fix release. We plan to get it out quickly.

I've just published the 92nd edition of my Kafka Monthly Digest! It covers the 4.1.0 release, as well as progress on 4.0.1 and 4.2.0. I also covers new KIPs, recent community releases and blog posts.

https://developers.redhat.com/blog/2025/10/01/kafka-monthly-digest-september-2025

🚨 Breaking News from Community Over Code 🚨

Introducing The ASF’s New Logo https://news.apache.org/foundation/entry/introducing-the-asfs-new-logo

#CommunityOverCode #OpenSource

We are happy to announce the Apache Kafka 4.1.0 release!

Most exciting, Queues for Kafka enters preview status, and the new “streams” rebalance protocol is available as early access.

Thanks a lot to 167 contributors and our RM @mickaelmaison!

https://kafka.apache.org/blog#apache_kafka_410_release_announcement