Marvel made the announcement about Phase 3 and notably absent was a Hulk solo movie of course. There was a Q&A afterwards and Kevin Feige was asked about there being no Hulk solo movie and here is what he said:
“[Hulk] is going to appear in many of the movies announced today,” Feige said. He noted that actor Mark Ruffalo is “on board” for those movies, as well. It is interesting to not he said “many” and not simply “the Avengers movies,” meaning we could see Hulk show up in other films, as well. However, he was much less committal about any stand-alone film. “We’ll see. We’d love to do it.”
I am still hoping that the Hulk shows up in the next Guardians of the Galaxy.