Mozilla Planning "Aggressive" Release Schedule for Firefox OS Updates
Firefox OS won't see the same number of updates as the browser but you can expect quarterly refreshes, as well as frequent security fixes.
"Now that we have our v1.0 behind us and we’re moving forward with even more partners, we’re going to do our best to bring Firefox OS back into our heartbeat and will make quarterly feature releases available to partners along with six-weekly security updates for the previous two feature releases," Mozilla said in a blog post. "As far as I know, that’s the most aggressive mobile OS release strategy out there (and may still require some tweaking)."
Between its browser and now its OS, Mozilla says this kind of pace is "unprecedented" at the rate it's moving, and we'd be hard pressed to argue. One thing Mozilla didn't say, however, is when Firefox OS 2.0 will see the light day, thereby leaving itself some wiggle room if its release strategy proves slightly too aggressive.