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  2. JDK Updates
  3. Main
  4. JDK 21u

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Versions Compared

Old Version 24

changes.mady.by.user Goetz Lindenmaier

Saved on Apr 25, 2024

compared with

New Version Current

changes.mady.by.user Goetz Lindenmaier

Saved on Jul 16, 2025

  • Previous Change: Difference between versions 23 and 24
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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 21.0.38

  • Tuesday, April 16 2024 July 15 2025 GA; OpenJDK 21.0.3 released 8 released (tag: jdk-21.0.38-ga)

OpenJDK 21.0.49

  • Wednesday, February May 28 20242025: jdk21u-dev repo open (tag: 21.0.4+09+0)
  • Tuesday, July 29 2025: First merge from jdk21u-dev to jdk21u (tag: 21.0.9+1)
  • Tuesday, September 2 2025: Rampdown; last merge from jdk21u-dev to jdk21u
  • Tuesday, September 30 2025: Last tag before code freeze
  • Tuesday, October 21 2025 GA; OpenJDK 21.0.9 released (tag: jdk-21.0.9-ga)

OpenJDK 21.0.10

  • Wednesday, September 3 2025: jdk21u-dev repo open (tag: 21.0.10+0)
  • Tuesday, October 28 2025 April 30 2024: First merge from jdk21u-dev to jdk21u (tag: 21.0.410+1)
  • Tuesday, May 28 2024December 2 2025: Rampdown; last merge from jdk21u-dev to jdk21u
  • Tuesday, June 25 2024December 30 2025: Last tag before code freeze
  • Tuesday, July 16 2024 January 20 2026 GA; OpenJDK 21.0.4 10 released (tag: jdk-21.0.4-ga10-ga)

OpenJDK 21.0.11

  • Wednesday, December 3 2025: jdk21u-dev repo open (tag: 21.0.11+0)

Latest Release

Latest GA release:21.0.38

  • 21.0.38+9 (GA), April 16th 2024July 15th 2025, [Release] [Tag] [Binaries]

Older releases can be found in the archive.

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Critical Fix Requests

[Unapproved requests]

Filters for Release 21.0.

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8

Changes new in 21.0.8 excluding test changes: Differences to OpenJDK 21.0.7.

21.0.8

21.0.3/all: OpenJDK but not OracleJDK: Changes in OpenJDK 21.0.3 that are not in OracleJDK 21.0.3.

21.0.3/new: OracleJDK but not OpenJDK: Changes new in OracleJDK 21.0.3 but not in OpenJDK 21.0.3

Filters for Release 21.0.4

21.0.4/all: OpenJDK but not OracleJDK: Changes in OpenJDK 21.0.4 8 that are not in OracleJDK 21.0.48.

21.0.48/all: OracleJDK but not OpenJDK: Changes backported to OracleJDK 21.0.43-21.0.3 but 8 but not in OpenJDK 21.0.48.

21.0.48/new: OracleJDK but not OpenJDK: Changes new in OracleJDK 21.0.4 8 but not in OpenJDK 21.0.48

Filters for Release 21.0.

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9

Changes new in 21.0.9 excluding test changes tbd: Differences to OpenJDK 21.0.8.

21.0.59/all: OpenJDK but not OracleJDK: Changes in OpenJDK 21.0.5 9 that are not in OracleJDK 21.0.59.

21.0.59/all: OracleJDK but not OpenJDK: Changes backported to OracleJDK 21.0.3-21.0.5 9 but not in OpenJDK 21.0.59.

21.0.59/new: OracleJDK but not OpenJDK: Changes new in OracleJDK 21.0.5 9 but not in OpenJDK 21.0.59

Common jdk21u JBS labels

The above filters exclude issues that are marked with the following labels:

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