Nundina › Discover calendars › Firefox Release Schedule calendar › Firefox 160 Merge DayFirefox 160 Merge Day22 October 2026 at 16:00 UTCFirefox 160 Merge Day: code moves from Nightly to Beta (Nightly becomes the next version). Planned for 2026-10-22 16:00 UTC.Firefox Release Schedule calendarMore from this calendar