A Mega-Marvel Movie Is Possible...Maybe

He is seemingly everywhere promoting "Thor: The Dark World", Marvel's Kevin Feige was asked by IGN about the notion of a film that could bring together "The Avengers," with Sony Pictures "The Amazing Spider-Man and Fox's "X-Men"

He said:

"I would say, not any time soon would we be in a position to team up with other studios who [have] a few of our characters, because we have so many characters ourselves – but I would never say never."

Wolverine's Hugh Jackman and Spidey's Andrew Garfield  have both said they'd be up for such a crossover, it's still unlikely to happen since Marvel already has its potential film slate locked for much of the next decade.