Heroes Reborn might have been their half-assed attempt at an actual revamp. However, it certainly came off more like just another sales stunt. I don't know. House of M, or whatever it was, was never intended to be a "reboot" of the Marvel U, rather than a supposed downgrade of mutants. It didn't alter pre-established history, it just changed the current course of the future. But, it's all balls, either way.
DC makes it a point to go out of their way to say "Hey, here comes the big reboot/revamp event!" with all of their "Crisis"es....Crisisees...Crisiseses....whatever...
