From what little I've been seeing, Wolverine and the X-Men is fairly successful so far, so I could see it being around a while with or without Disney, assuming the second season's as popular as the first.

Apparently the Disney deal might be good news for the newer Spectacular Spider-Man series, which I've come to think (once you get past the kind of lame-looking design for humanity in general), is the best Spider-Man cartoon yet, too, since it's still in limbo for a third season, but a) Disney channel is airing it so when they own Marvel they can get it for less, and b) Sony's part of any cartoon rights to Spidey was apparently recently negotiated away (in exchange for slightly longer movie rights). I don't understand how these things work exactly, but others have said they can still do a third season without Sony, and probably make more money too since they're not sharing it. Still in Limbo, but perhaps a little more chance at unlimboing. I'm hopeful for that.