Branch cut V8 14.2 on 2025-09-29

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Jakob Kummerow

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Sep 26, 2025, 5:29:18 AM (3 days ago) Sep 26

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Hi,

It is time again. If you have any questions regarding the release, please ping this thread.

FRIDAY 2025-09-26: API adoption freeze starts.

V8 will branch on MONDAY for the upcoming Beta phase for Chrome 142.

In order to make this synchronization as painless as possible for V8 and Blink, please don't make API changes which make the revert more difficult and don't adopt API changes. When in doubt, ask vahl@.

MONDAY 2025-09-29: Create 14.2 branch

based on one of the latest V8 versions. The auto-roller is closed. Keep in mind that this means we are not integrating with Chromium (much less test coverage). If you happen to work on an important fix, please make sure that the fix is on 14.2 too! See information on merging & patching for the details.

Latest TUESDAY 2025-09-30: Back to normal and API adoption freeze is lifted

Auto-roller is running again and we are back to normal business.

Cheers,

Jakob

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