Git source repository: https://github.com/openjdk/jdk25u

Maintainers

• David Buck
• Seán Coffey
• Rob McKenna
• Naoto Sato
• Dalibor Topić

Push Requests

For regular push requests, follow the guide instructions.

During the later stages of a release cycle, the release enters rampdown. If a change needs to be pushed to a release in rampdown, push approval can still be requested using the jdk25u-critical-request label. As the name of this tag suggests, this process is intended for fixes such as major regressions that must make the release. The maintainers may approve with jdk25u-critical-yes. Once the requester has pushed a critically approved fix it will automatically be included in the targeted release.

[Outstanding requests] [All Requests] [All Approvals]

Timelines

JDK 25.0.1 timeline

• Jul 22 2025 RDP2
• Oct 21 2025 GA

JDK 25.0.2 timeline

• Oct 2025 RDP2
• Mid Jan 2026 GA

Welcome to OpenJDK 25.0.3+ Updates!

This section applies to OpenJDK 25 starting with update 25.0.3.

OpenJDK 25 updates are part of the JDK updates project of the OpenJDK. Rob McKenna serves as the Project Lead. The list of Reviewers, Committers, and Authors can be found in the jdk updates section of the OpenJDK Census. 

Maintainers

• Goetz Lindenmaier (Lead Maintainer)
• Andrew Haley
• Andrew John Hughes
• Christoph Langer
• Severin Gehwolf  

Latest Release

OpenJDK 25 updates are delivered on the same established quarterly cycle used by Oracle i.e. "the third Tuesday of January, April, July and October."

Latest GA release: 25.0.1

• 25.0.1+8 (GA), October 21st 2025, [Release tbd] [Tag] [Binaries]

Older releases can be found in the archive.

Downloads

Latest Generally Available (GA) binary releases of the jdk25u stream of the OpenJDK jdk-updates project are available at: https://adoptium.net/temurin/releases/?version=25

Latest Early Access (EA) binary releases of the jdk25u stream of the OpenJDK jdk-updates project are available at: https://adoptium.net/temurin/nightly/?version=25

General Developer and Distributor Information

Development takes place in the jdk25u-dev Git repository. This is the primary place for OpenJDK committers to submit their work.

Code from the development repository is regularly tagged and promoted to the master jdk25u repository, which is used to stabilize and deliver the quarterly releases. Distributors should use this as their primary source for creating OpenJDK builds.

For further process details you might want to continue reading here.

Timelines

The release date follows the schedule of Oracle Critical Patch Updates as this is the date embargoed security fixes can be published.

OpenJDK 25.0.3

• Wednesday, November 26 2025: jdk25u-dev repo open (tag: 25.0.3+0)
• Tuesday, February 3 2026: First merge from jdk25u-dev to jdk25u (tag: 25.0.3+1)
• Tuesday, March 3 2026: Rampdown: last merge from jdk25u-dev to jdk25u
• Tuesday, March 31 2026: Last tag before code freeze
• Tuesday, April 21 2026 GA; OpenJDK 25.0.3 released (tag: jdk-25.0.3-ga)

OpenJDK 25.0.4

• Wednesday, March 4 2026: jdk25u-dev repo open (tag: 25.0.4+0)
• Tuesday, May 5 2026: First merge from jdk25u-dev to jdk25u (tag: 25.0.4+1)
• Tuesday, June 2 2026: Rampdown: last merge from jdk25u-dev to jdk25u
• Tuesday, June 30 2026: Last tag before code freeze
• Tuesday, July 21 2026 GA; OpenJDK 25.0.3 released (tag: jdk-25.0.4-ga)

OpenJDK 25.0.5

• Wednesday, June 3 2026: jdk25u-dev repo open (tag: 25.0.5+0)

Contributing

New fixes should first be submitted to the development repository for the current version of OpenJDK, jdk/jdk and then backported. Thus, most changes submitted to the OpenJDK 25 project will be backports from this repository.  Exceptions are made if an issue only applies to 25.

Everybody is encouraged to submit fixes for OpenJDK 25 by creating a pull request to the jdk25u-dev Git repository. Established community members will help new developers without commit access in getting their patch reviewed. For details on the process involved, continue reading these backport instructions.

Should you not be willing or not be able to drive a fix into JDK 25 updates, you can still suggest changes by dropping a mail to the jdk-updates-dev mailing list. But by only doing that, you are at the grace of the community to pick up your suggestion.

Don't prepare changes against repository jdk25u.  Only in rare cases for urgent fixes during rampdown changes against jdk25u are possible (critical changes). 

Scope of Changes to 25u: Fix Approvals

To assure a high quality of delivered updates, we restrict the scope of changes that are brought to jdk25u. In general we follow the common rules for the jdk-updates project, especially rule 3. 

However, if there is an enhancement that provides substantial benefit to OpenJDK 25u users and it is of low risk, we will consider it. Please ask on the jdk-updates mailing list  if you are in any doubt about whether your proposed backport might qualify.

The decision whether a change is suitable for jdk25u is taken by the maintaines in the approval process. If your change is ready for integration (implemented, tested, reviewed) you can trigger the approval with the /approval command in your pull request.  In your approval comment, give the reason why you backport, your risk estimate, especially wrt. breaking existing installations, tell how you tested and whether a review was necessary.  The maintainers try to guarantee weekly processing of outstanding approvals.

JBS Filters

Some filters will only work for users that are logged into JBS.

Approval / Fix Request Filters

These filters are used to process approval requests

Standard / jdk25u-dev targeted:  [Unapproved requests]  [Approved requests without push]  [All requests]  [Approved requests]

Critical / jdk25u targeted: [Unapproved requests]  [Approved requests without push] 

Release Filters

Whith these filters you can expore the differences between various releases.

Filters for Release 25.0.3

Changes new in 25.0.3 excluding test changes: Differences to OpenJDK 25.0.2.

25.0.3/all: OpenJDK but not OracleJDK: Changes in OpenJDK 25.0.3 that are not in OracleJDK 25.0.3.

25.0.3/new: OracleJDK but not OpenJDK: Changes new in OracleJDK 25.0.3 but not in OpenJDK 25.0.3

Filters for Release 25.0.4

Changes new in 25.0.4 excluding test changes tbd: Differences to OpenJDK 25.0.3.

25.0.4/all: OpenJDK but not OracleJDK tbd: Changes in OpenJDK 25.0.4 that are not in OracleJDK 25.0.4.

25.0.4/all: OracleJDK but not OpenJDK tbd: Changes backported to OracleJDK 25.0.3-25.0.4 but not in OpenJDK 25.0.4.

25.0.4/new: OracleJDK but not OpenJDK tbd: Changes new in OracleJDK 25.0.4 but not in OpenJDK 25.0.4

Common jdk25u JBS labels

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

• jdk25u-na Change does not apply to open jdk25u. 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 25u and get labelled that way.
• jdk25u-defer-next Change is generally acceptable, but should go into the next JDK 25 update release. I.e. 25.0.3 is currently collecting fixes in jdk25u-dev, but the proposed change should get into 25.0.4 (the next release) instead.
• jdk25u-todo Changes Oracle backported to older releases that are not backported to open jdk25u.  We mostly need this tag to make the "all" filters more efficient.

Generic timetable