Firefox 6.0b2 is the first combined release: Firefox desktop and Firefox for Mobile running in the same automation, run by the same release engineer.
I remember talking about this with John O'Duinn in pie-in-the-sky brainstorming sessions back in Building K a few years ago, back before Fennec 1.0. It seemed so far away, then. It's a bit surreal seeing it run now.
A large part of the team chipped in on this one, but Rail did most of the heavy lifting. Thank you Rail!