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Release DateOctober 27, 2026
Release OwnerRyan VanderMeulen
Corresponding ESR releases 153.6.0 · 115.44.0?
Nightly cycle length2 weeks
Beta cycle length2 weeks
Bugs fixed in nightly 1257
Uplifts in beta197 (1 backout)
Uplifts in RC5 (0 backouts)
Uplifts in dot releases14 (0 backouts)
Total number of uplifts216
Betas5
Release Candidates1
Dot releases1
Release notes General · Developer · Enterprise
Key Milestones
Nightly start September 29
Beta start October 12
159.0 4% adoption October 27
159.0.1 37% adoption November 3
Key Milestones
159.0 October 26
159.1 November 2
159.2 November 9
159.3 Planned November 16