Magneto's future self in X-Men: Days of Future Past seems to be a refined and wiser man to some degree. While there were earlier instances of him working together with the X-Men and this time it might also just be a mere convenience partnership in light of the Sentinel threat, his mannerisms and statements about himself to have been on a "darker path" in the past suggest that he seems to have overcome his aggresive and elitist attitude.
Yet, I'm not sure how much this is really due to a change in his character or just due to the fact that the humans aren't a threat anymore at all and it's only about sheer survival now. And in fact this Sentinel threat shows that Magneto wasn't so wrong with his fears about the future of mutants in the human society. If he is still not entirely convinced of Charles' peaceful way, he might even have intentded for his past self to follow his own goals when he asked Logan to find him, too. So I wonder how fragile the alliance and reconciliation of Magneto with the X-Men really is. What caused him to change his whole attitude in favour of Xavier's way? Or is it really only a convenience partnership for now?
I see that this is a highly speculative question since the movie doesn't seem to answer it (I would be happy if does, though) and especially since the future arc of the story is more or less moot, having been effectively annihilated by the past actions anyway. But maybe I missed something or the corresponding source material does provide some more information on this (if the movie was actually true to it in this regard).