Soft code freeze for Firefox 119 starts on September 21 @ 8am UTC

[Donal Meehan]

Hi,

With Firefox 118 in the Release Candidate phase this week, we are nearing the end of the Nightly 119 cycle

In order to avoid invalidating the testing we get out of late Nightly and to ensure that we can roll out Beta 119 to a wider audience with confidence this week, we'd like to ask that any risky changes be avoided from Thursday, September 21 until after the version bump to 120 on September 25.

Also, please be advised that string freeze for Firefox 119 begins Friday, September 22. 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.

Thanks,

Donal Meehan,
Firefox Release Manager

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[Dianna Smith]

Hello, the 120 version bump has landed on mozilla-central and the soft freeze is over.

Thanks,

Dianna Smith

Firefox Release Manager

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