I dunno. The threads I read made it sounds more like a set of accessories for the M3, rather than a whole redesign. But who can say?
I pretty much like mine the way it is. If I could change a few things, I'd alter the settings on the hi/lo twist switch in the head. I'd make the low setting much lower, about the same level as the as low you get from the two-stage reverse clicky switch. Then I'd dump the two-stage tailswitch and replace it with a nice single stage forward clicky. Finally, I might go back and ask that the high setting (in the head twist) run about 50% higher current, or as much as the battery can supply.