Release Management/Calendar
Note: refer to Release Management Calendar for up-to-date scheduling. This wiki page may not always have the most current information.
This schedule is based on the current RapidRelease plan. Future dates may change if the process changes. Code is not always released to users on the same day as the branch migration. The release to users may be a few days later, to allow for manual testing and sign-off.
Past branch dates
Note: Firefox 5 was on a slightly different schedule. It spent five weeks each on Aurora and Beta while all subsequent releases will spend six weeks on each branch.
| merge date | release date | central | aurora | beta | release |
|---|---|---|---|---|---|
| 2011-04-12 | Firefox 6 | Firefox 5 | |||
| 2011-05-17 | Firefox 5 | ||||
| 2011-05-24 | Firefox 7 | Firefox 6 | |||
| 2011-06-21 | Firefox 5 | ||||
| 2011-07-05 | Firefox 8 | Firefox 7 | Firefox 6 | ||
| 2011-08-16 | Firefox 9 | Firefox 8 | Firefox 7 | Firefox 6 | |
| 2011-09-27 | Firefox 10 | Firefox 9 | Firefox 8 | Firefox 7 | |
| 2011-11-08 | Firefox 11 | Firefox 10 | Firefox 9 | Firefox 8 | |
| 2011-12-20 | Firefox 12 | Firefox 11 | Firefox 10 | Firefox 9 | |
| 2012-01-31 | Firefox 13 | Firefox 12 | Firefox 11 | Firefox 10 | |
| 2012-03-13 | Firefox 14 | Firefox 13 | Firefox 12 | Firefox 11 | |
| 2012-04-24 | Firefox 15 | Firefox 14 | Firefox 13 | Firefox 12 | |
| 2012-06-05 | Firefox 16 | Firefox 15 | Firefox 14 | Firefox 13 | |
| 2012-07-16 | 2012-07-17 | Firefox 17 | Firefox 16 | Firefox 15 | Firefox 14 |
| 2012-08-27 | 2012-08-28 | Firefox 18 | Firefox 17 | Firefox 16 | Firefox 15 |
Future branch dates
| merge date | release date | central | aurora | beta | release |
|---|---|---|---|---|---|
| 2012-10-08 | 2012-10-09 | Firefox 19 | Firefox 18 | Firefox 17 | Firefox 16 |
| 2012-11-19 | 2012-11-20 | Firefox 20 | Firefox 19 | Firefox 18 | Firefox 17 |
| *Week of 2013-01-06 | Firefox 21 | Firefox 20 | Firefox 19 | Firefox 18 | |
| 2013-02-18 | 2013-02-19 | Firefox 22 | Firefox 21 | Firefox 20 | Firefox 19 |
...and so on, every six weeks.
*Some releases will be rescheduled to avoid conflicts with major holidays.
Note that the merge from beta -> release happens ahead of time (usually on the Thurs/Friday prior to release date).