Release date is 5th June. It’s every 6 weeks on a Tuesday. Firefox 10 is out on 31st January 2012, you can pretty much work the rest of the year out from there.
13th March – 11
24th April – 12
5th June – 13
17th July – 14
28th August – 15
9th October – 16
20th November – 17
1st January – 18
A patch for the background update feature has already been uploaded to bugzilla so that it’s ready as soon as the Nightly development period for FF13 begins on 31st Jan or shortly after.
