Originally Posted by Great Mind(s)
I don't think so because Singer thanks Ratner for sparing the lives of Rogue, Kitty and Iceman. The Wolverine is supposedly tying into Days Of Future Past according to Mark Millar, and we know The Wolverine is set after The Last Stand.
Singer also said he hopes to fix things or clean up the mess left by TLS. I think that may mean, going back in time and creating a brand new timeline where Cyclops, Xavier and Jean are still alive. Regarding Xavier being in the future alive, there is a post credits scene in X3.
I agree. I used to think the dystopian future would be an alternate one, unrelated to the events of The Last Stand, but not anymore. Too much seems to point to this being Singer's way of connecting all the films, while still being able to, as Singer puts it, "correct" a few things.