«  Firefox 39  »
Go to Release channel

Release DateJuly 2, 2015
Release OwnerLiz Henry
Nightly cycle length6 weeks
Beta cycle length7 weeks
Uplifts in BetaData cannot be extracted from mercurial (missing HG tags)
Uplifts in RC10 (0 backouts)
Total number of uplifts10
Betas7
Release Candidates6
Dot releases1
Release notes Consumer notes Developer notes
Corresponding ESR releases 38.1.0 31.8.0
Key Milestones
Nightly start March 31
Beta start May 28
39.0 July 2
39.0.1 February 28