WARNING: Spoilers herein.
While Avengers: Endgame wraps up several years' worth of storylines,it’s far from the end of the Marvel Cinematic Universe. That's the secret of superhero comics: There is no ending. Their adventures simply disappear on with a fresh batch of creators. For the MCU, that means the Russos are bowing out and other emerging filmmakers will acquire to carry the legacy forward.
Source: blastr.com