The Russo Brothers confirmed back in July that they had finished filming Avengers: Infinity War, which pits Thanos up against Earth’s Mightiest Heroes.
Kevin Feige has discussed how pivotal Avengers 4 will be for the universe, mentioning that Spider-Man: Homecoming 2 starts right after Avengers 4 ends.
Based on the latest Avengers 4 set photos, it looks like Tony will be building some heavier technology to combat Thanos and other cosmic threats.
The future of the MCU is looking huge, and it’s going to drastically change as Avengers: Infinity War and Avengers 4 will bring a whole new age for the MCU.