Not much is official when it comes to Marvel Studios’ plans after Avengers: Endgame. Two things that are, though: Spider-Man: Far From Home, which is out in July, and a third Guardians of the Galaxy movie which, as you well know, has been a whole other headache.
Source: https://io9.gizmodo.com/kevin-feige-is-just-happy-james-gunn-is-back-on-guardia-1833887438