Soft code freeze for Firefox 89 starts April 15

[Pascal Chevrel]

Hello,

With Firefox 88 RC out of the door, we are nearing the end of the Nightly 89 cycle.

In order to avoid invalidating the testing we get out of late Nightly and to ensure that we can roll out Beta 89 to a wider audience with confidence next week, we'd like to ask that any risky changes be avoided from Thursday April 15 until after the version bump to 90 on April 19.

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,
Pascal

-- 
Pascal Chevrel
Firefox Release Manager 
Firefox Nightly/Beta community management

[Pascal Chevrel]

Hello again,

Please also keep in mind that we have a string freeze on April 16 (Friday).

Thanks

Pascal

-- 
Pascal Chevrel
Firefox Release Manager 
+ Firefox Nightly community management

[Julien Cristau]

Hi,

the last merge of autoland to central for 89 has happened; please consider the soft code freeze lifted, and 90 development open.

Cheers,

Julien

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