Mozilla has committed to a six-week rapid-release schedule starting with Firefox 5; Firefox 6 is schedule for release on August 16.
More details here: https://wiki.mozilla.org/RapidRelease
On 21 Jun 2011, at 1445, Misc Things wrote:
> just been released for Linux
>
> looks like 3 months from 4 to 5...
>
> Andrew