Firefox Release Schedule calendar 2026 - upcoming schedule

Nundina › Discover calendars › Technology › Firefox Release ScheduleFirefox Release Schedule calendar 2026Firefox Release Schedule is a free calendar you can subscribe to on Nundina, with 51 dates listed. Data from Mozilla (What Train Is It Now?). Subscribe to it on Nundina and every date lands in your own calendar, updated automatically.Firefox merge day, string freeze, first beta, release and planned dot-release dates for each upcoming major version, from Mozilla's release schedule. For web developers, extension authors and IT admins.Upcoming events

26 October 2026 at 13:00 UTCFirefox 160 Beta 1

27 October 2026 at 14:00 UTCFirefox 159 Release

3 November 2026 at 14:00 UTCFirefox 159 Dot Release 1

4 November 2026 at 00:00 UTCFirefox 161 String Freeze

5 November 2026 at 16:00 UTCFirefox 161 Merge Day

9 November 2026 at 13:00 UTCFirefox 161 Beta 1

10 November 2026 at 14:00 UTCFirefox 160 Release

17 November 2026 at 14:00 UTCFirefox 160 Dot Release 1

18 November 2026 at 00:00 UTCFirefox 162 String Freeze

19 November 2026 at 16:00 UTCFirefox 162 Merge Day

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