A synopsis for Avengers 4 has appeared online, although it probably won’t be the final official one that Marvel will use next April when the promotional tour for the movie begins.
This is what was included in the latest issue of Licensing Magazine, which was distributed at the Licensing Expo going on right now in Las Vegas:
“A culmination of 22 interconnected films, the fourth installment of the Avengers saga will draw audiences to witness the turning point of this epic journey. Our beloved heroes will truly understand how fragile this reality is and the sacrifices that must be made to uphold it.”
No major spoilers, but there are some hints there that there are still some big deaths on the way next May. You should probably expect a bigger, and more detailed, synopsis to come sometime in April much like the Ant-Man and The Wasp one Marvel recently released.