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OpenJDK 21 updates will be delivered on the same established quarterly cycle used by Oracle i.e. "the third Tuesday closest to the 17th day of January, April, July and October."
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The release date follows the schedule of Oracle Critical Patch Updates as this is the date embargoed security fixes can be published.
OpenJDK 21.0.78
- Tuesday, April July 15 2025 GA; OpenJDK 21.0.7 8 released (tag: jdk-21.0.78-ga)
OpenJDK 21.0.9
- Wednesday, February 26 May 28 2025: jdk21u-dev repo open (tag: 21.0.89+0)
- Tuesday, April July 29 2025: First merge from jdk21u-dev to jdk21u (tag: 21.0.89+1)
- Tuesday, Mai 27 September 2 2025: Rampdown; last merge from jdk21u-dev to jdk21u
- Tuesday, June 24 September 30 2025: Last tag before code freeze
- Tuesday, July 15 October 21 2025 GA; OpenJDK 21.0.8 9 released (tag: jdk-21.0.89-ga)
OpenJDK 21.0.910
- Wednesday, Mai 28 September 3 2025: jdk21u-dev repo open (tag: 21.0.910+0)
- Tuesday, July 29 October 28 2025: First merge from jdk21u-dev to jdk21u (tag: 21.0.910+1)
- Tuesday, September December 2 2025: Rampdown; last merge from jdk21u-dev to jdk21u
- Tuesday, September December 30 2025: Last tag before code freeze
- Tuesday, October 21 2025 January 20 2026 GA; OpenJDK 21.0.9 10 released (tag: jdk-21.0.910-ga)
OpenJDK 21.0.1011
- Wednesday, September December 3 2025: jdk21u-dev repo open (tag: 21.0.1011+0)
Latest Release
Latest GA release:21.0.78
Older releases can be found in the archive.
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Critical Fix Requests
Filters for Release 21.0.7
Changes new in 21.0.7 excluding test changes: Differences to OpenJDK 21.0.6.
21.0.7/all: OpenJDK but not OracleJDK: Changes in OpenJDK 21.0.7 that are not in OracleJDK 21.0.7.
21.0.7/all: OracleJDK but not OpenJDK: Changes backported to OracleJDK 21.0.3-21.0.7 but not in OpenJDK 21.0.7.
21.0.7/new: OracleJDK but not OpenJDK: Changes new in OracleJDK 21.0.7 but not in OpenJDK 21.0.7
Filters for Release 21.0.8
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