Avenger: Infinity War "A New Beginning" for the MCU
"I can't get into too much details about who we're introducing, but these two movies are intended to be a culmination of everything that has happened to the [Marvel Cinematic Universe] since the very first Iron Man movie". Russo said to IGN. "In being a culmination, these movies are in some ways going to be an end of certain things, and in some ways, going to be a beginning of certain things"
Avengers: Infinity War is no longer part of two films. The previously titled Avengers: Infinity War part 2 has been retitled as Untitled Avengers. Joe and Anthony Russo remains tight-lipped about what the movie will be about except that it will be different enough from Avengers: Infinity War to justify the title change.
Avenger: Infinity War is set to premiere on May, 2018