Soft code freeze for Firefox 132 starts on September 26 @ 8am UTC

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Ryan VanderMeulen

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Sep 24, 2024, 8:20:59 AMSep 24
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Hello,

With Firefox 131 in the Release Candidate phase this week, we are nearing the end of the Nightly 132 cycle.

In order to avoid invalidating the testing we get out of late Nightly and to ensure that we can roll out Beta 132 to a wider audience with confidence next week, we'd like to ask that any risky changes be avoided from Thursday, September 26 until after the version bump to 133 on September 30.

Also, please be advised that string freeze for Firefox 132 begins Friday, September 27. In order to ensure that our localizers have adequate time to translate strings, please make sure that all string changes have landed by EOD Friday.

Some reminders for the soft code freeze period:

Do:
- Be ready to back out patches that cause crash spikes, new crashes, severe regressions
- Monitor new regressions and escalate merge blockers
- Support release management by prioritizing fixing of merge blockers

Do Not:
- Land a risky patch or a large patch
- Land new features (that affect the current Nightly version) — be mindful that code behind NIGHTLY_BUILD or RELEASE_OR_BETA ifdefs can lead to unexpected CI results
- Flip prefs that enable new Features that were untested in the Nightly cycle
- Plan to kick off new experiments that might impact a feature's merge readiness

Please let us know if you have any questions/concerns.

Thank you,
Ryan VanderMeulen
Firefox Release Manager

Ryan VanderMeulen

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Sep 30, 2024, 10:20:47 AMSep 30
to Firefox Dev, dev-pl...@mozilla.org
The version bump to 133 has now landed on mozilla-central and the soft freeze period is over.

Thanks,

Ryan VanderMeulen
Firefox Release Manager
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