Firefox/Channels/Meetings/2026-06-04

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Channel Meeting Details

• Thursdays at 7:30am Pacific Time
• Past meeting notes: https://wiki.mozilla.org/Firefox/Channels/Meetings

Video/Teleconference Details

• Zoom Meeting ID: 536 097 768
• https://mozilla.zoom.us/j/536097768

REMEMBER

These notes are read by people who weren't able to attend the meeting. Please make sure to include links and context so they can be understood.

Attendees

RyanVM, abodea, pascalc, dsmith, oardelean, mboldan, epopescu, csasca, dveditz

Schedule Update

• 151
  • Desktop 151.0.3 and Android Fenix/Focus 151.0.3 planned dot release live @ 100% rollout
  • Desktop/Android planned dot release scheduled for next week
    • gtb on 2026-06-08, go-live on 2026-06-09 after QA sign-off
  • Firefox iOS 151.3 scheduled to start phased rollout at 03:00 UTC on 2026-06-07
• 152
  • Desktop 152.0b8 gtb tomorrow @ 100% rollout
  • Android 152.0b8 gtb tomorrow @ 99% rollout
  • Firefox iOS 152.0 branches and Firefox/Focus iOS 152.0 gtb today due to Mozilla wellness day tomorrow
  • Firefox Desktop/Android 152 Release Candidate builds on Jun 10, 2026
  • The deadline for Release Notes is 2026-06-09
• 153
  • No update

Release Quality Metrics

• https://bugdash.moz.tools/#tab.beta
  • Most metrics are within expected ranges nearing next week’s RC, but the number of unfixed new regressions is trending higher than we’d like to see.
    • Following up on bugs that seem stalled.
  • Sec bugs are mostly under control at this point, for now at least.

Desktop Stability

Nightly

crash incidence (% of users experiencing a crash): 3.22% (-1.11pp compared to previous week which had a frequent crash)

• increase driven by https://bugzilla.mozilla.org/show_bug.cgi?id=2043955
• Crash in [@ _cairo_mutex_initialize]
  • https://bugzilla.mozilla.org/show_bug.cgi?id=2044985
  • affects Nightly builds far more often beta
  • awaiting triage

Beta

crash incidence: 2.04% (-0.23pp)

Release

crash incidence: 1.14% (-0.10pp)

QA

Nightly

• Nightly new feature testing is in progress. Reports will be sent until June 5th, eod.
• Nightly top site web compat testing is completed. No concerns.
• WebRTC testing completed.
  • New S2 issue encountered - https://bugzilla.mozilla.org/show_bug.cgi?id=2044894

Beta

• 3rd round of functional testing is in progress. No concerns.
• Beta exploratory testing is in progress. No concerns.

Mobile

• Android
  • Build Signoffs Fenix & Focus
    • Beta 152.0b5 - status GREEN
    • Beta 152.0b6 - status GREEN
    • Beta 152.0b7 - status GREEN
    • dot release 151.0.3 - status GREEN
  • Feature Testing
    • [QA-5139] Android World Cup - Milestone 3 - Nightly 153 - testing in progress
    • [QA-5139] Android World Cup - Milestone 3 - Beta 152 - testing will start tomorrow
    • [QA-5302] Paid Marketing Channels - test planning in progress
    • [QA-5242] Native share sheet Android - TC writing is in progress
    • [QA-5215] Testing Media Capabilities DOM API Improvements - Beta 152 – GREEN
    • [QA-5203] Marketing Cards Variants] Beta Fx152 testing - Variant D
• iOS
  • Build Signoffs
    • Firefox iOS v151.3 (72691) - status GREEN
  • Feature Testing
    • [QA-5267] HTTPS first on iOS - not started
    • [QA-5138] iOS World Cup Feature Milestone 3 - sign off to be sent soon
    • [QA-5270] Add Categories to Feed iOS - not started
    • [QA-5288] Verify randomization of microsurvey - not started

Roundtable & Special Topics

• Mozilla wellness day tomorrow (June 5)