I really want Disney to make a play for the Fantastic Four rights, not for the heroes, but for the villains. The FF have one of the best pantheons of villains, ones that fight the entire Marvel Universe to boot: Kang, Galactus, the Skrulls, and oh yeah, FREAKING DOCTOR DOOM. With the MCU blowing their load with Thanos at the end of Phase 3 and really not having anyone else they have the rights to that can top him, getting those four under their umbrella would do a lot.
Either way, I wouldn't read too much into this, Feige swore up and down that Spidey wasn't coming to the MCU despite rumors to the contrary and eventual announcement.