Page History

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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 21.0.8

• Tuesday, July 15 2025 GA; OpenJDK 21.0.8 released (tag: jdk-21.0.8-ga)

OpenJDK 21.0.9

• Wednesday, May 28 2025: jdk21u-dev repo open (tag: 21.0.9+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)

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• Wednesday, September 3 2025: jdk21u-dev repo open (tag: 21.0.10+0)
• Tuesday, October 28 November 05 2025: First merge from jdk21u-dev to jdk21u (tag: 21.0.10+1)
• Tuesday, December 2 2025: Rampdown; last merge from jdk21u-dev to jdk21u
• Tuesday, December 30 2025: Last tag before code freeze
• Tuesday, January 20 2026 GA; OpenJDK 21.0.10 released (tag: jdk-21.0.10-ga)

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Critical Fix Requests

[Unapproved requests]

Filters for Release 21.0.

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9

Changes new in 21.0.8 9 excluding test changes: Differences to OpenJDK 21.0.78.

21.0.89/all: OpenJDK but not OracleJDK: Changes in OpenJDK 21.0.8 9 that are not in OracleJDK 21.0.89.

21.0.89/all: OracleJDK but not OpenJDK: Changes backported to OracleJDK 21.0.3-21.0.8 9 but not in OpenJDK 21.0.89.

21.0.89/new: OracleJDK but not OpenJDK: Changes new in OracleJDK 21.0.8 9 but not in OpenJDK 21.0.89

Filters for Release 21.0.

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10

Changes new in 21.0.9 10 excluding test changes: Differences to OpenJDK 21.0.89.

21.0.910/all: OpenJDK but not OracleJDK: Changes in OpenJDK 21.0.9 10 that are not in OracleJDK 21.0.910.

21.0.910/all: OracleJDK but not OpenJDK: Changes backported to OracleJDK 21.0.3-21.0.9 10 but not in OpenJDK 21.0.910.

21.0.910/new: OracleJDK but not OpenJDK: Changes new in OracleJDK 21.0.9 10 but not in OpenJDK 21.0.910

Filters for Release 21.0.

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11

Changes new in 21.0.10 11 excluding test changes tbd: Differences to OpenJDK 21.0.910.

21.0.1011/all: OpenJDK but not OracleJDK: Changes in OpenJDK 21.0.10 11 that are not in OracleJDK 21.0.1011.

21.0.1011/all: OracleJDK but not OpenJDK: Changes backported to OracleJDK 21.0.3-21.0.10 11 but not in OpenJDK 21.0.1011.

21.0.1011/new: OracleJDK but not OpenJDK: Changes new in OracleJDK 21.0.10 11 but not in OpenJDK 21.0.1011

Common jdk21u JBS labels

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

• jdk21u-na Change does not apply to open jdk21u. In general, this is a change done by Oracle for their build or test infrastructure, for their own delivery or in their tests not open sourced. Any other change might not be deemed appropriate for OpenJDK 21u and get labelled that way.
• jdk21u-defer-next Change is generally acceptable, but should go into the next JDK 21 update release. I.e. 21.0.4 is currently collecting fixes in jdk21u-dev, but the proposed change should get into 21.0.5 (the next release) instead.
• jdk21u-todo Changes Oracle backported to older releases that are not backported to open jdk21u.  We mostly need this tag to make the "all" filters more efficient.