The Apache Flink community is very happy to announce the release of Apache Flink 2.1.0, which is the first release for the Apache Flink 2.1 series.
Apache Flink® is an open-source stream processing framework for distributed, high-performing, always-available, and accurate data streaming applications. The release is available for download at: https://flink.apache.org/downloads.html Please check out the release blog post for an overview of the improvements for this release: https://flink.apache.org/2025/07/31/apache-flink-2.1.0-ushers-in-a-new-era-of-unified-real-time-data--ai-with-comprehensive-upgrades The full release notes are available in Jira: https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12355556&projectId=12315522 We would like to thank all contributors of the Apache Flink community who made this release possible! Best, Ron
