Firefox 161 Beta 1 - Firefox Release Schedule - Nundina

Nundina › Discover calendars › Firefox Release Schedule calendar › Firefox 161 Beta 1Firefox 161 Beta 19 November 2026 at 13:00 UTCFirefox 161 Beta 1: first Beta build is released. Planned for 2026-11-09 13:00 UTC.Firefox Release Schedule calendarMore from this calendar

26 October 2026 at 13:00 UTC - Firefox 160 Beta 1

27 October 2026 at 14:00 UTC - Firefox 159 Release

3 November 2026 at 14:00 UTC - Firefox 159 Dot Release 1

4 November 2026 at 00:00 UTC - Firefox 161 String Freeze

5 November 2026 at 16:00 UTC - Firefox 161 Merge Day