Two articles from the AV Club
http://www.avclub.com/article/marvel-studios-might-do-new-thing-after-avengers-4-254158
http://www.avclub.com/article/theres-good-reason-why-avengers-4-doesnt-have-titl-254180
Comic book universes tend to go through massive reboots every few years, literally wiping out all of reality in favor of one that, say, erases post-WWII storylines that no longer make any sense, introduces a fascist Captain America, or makes it so Batman has somehow had four different sidekicks in about as many years, but so far only the X-Men movies have tried to overtly alter the continuity like that without completely abandoning what came before. After Avengers: Infinity War and its untitled sequel, though, the Marvel Cinematic Universe might give the whole reboot thing a try.
Speaking with Collider, Marvel Studios president Kevin Feige talked a little bit about the future of the MCU, and for the first time in a while, it sounds like the studio doesnt have a whole lot of concrete plans. Feige says that Infinity War has a sense of a climax if not a conclusion to the many stories the MCU has been telling, and he thinks that whatever comes after Avengers 4the aforementioned untitled sequelwill be very different. Up until now, the MCU has been divided into numbered Phases, but Feige isnt sure if there will be a Phase 4 after Avengers 4. In fact, he thinks it might be a new thing.
http://www.avclub.com/article/marvel-studios-might-do-new-thing-after-avengers-4-254158
Looks like itll be awhile before we learn the actual name of the fourth installment of the Avengers movies. Yesterday, we reported on how Marvel might be looking to shake up its cinematic universe following the events of the next two films of its tentpole franchise, with Marvel Studios president Kevin Feige discussing how whatever comes after Avengers 4 will be very differentstudio speak for weve got movie stars whose contracts will be finished. And now, in a new interview with Cinema Blend, Feige confirms something that has been suspected for a whilenamely, the reason the next film after Avengers: Infinity War doesnt have an official title yet is because the one Marvels got is a massive spoiler.
The idea that the fourth film may include some surprising twists first took shape back when we learned the next two Avengers films were no longer titled Infinity War Part I and Part II. So, when asked point blank if the reason Avengers 4 still doesnt have a title is because its actual title constitutes a spoiler for the events of Avengers: Infinity War, Feige replied, Yeah, for sure. This suggests that, even if the Thanos storyline thats been teased since the ending of the very first Avengers film back in 2012 is still spread across two films, whatever happens in the first will create some significant narrative changes in the second.
http://www.avclub.com/article/theres-good-reason-why-avengers-4-doesnt-have-titl-254180