Ant-Man and the Wasp is the last present day before Avengers 4, since Captain Marvel is turning the clock back to the 1990s for Carol Danvers’ origin story.
As for Earth’s Mightiest Heroes’ fourth movie, a.k.a. the final Phase 3 installment, set photos show Ant-Man interacting with Tony Stark, so at least we know he’ll eventually break free from the Quantum Real (although who knows how much time will have passed).
As for the other members of Ant-Man’s supporting cast, Peyton Reed wouldn’t comment to HuffPost on what’s happened to them post-Avengers: Infinity War, including Scott’s daughter, Cassie, though she is rumored to show up in Avengers 4.
Beyond that, it remains to be seen how Hank Pym, Hope van Dyne, Janet van Dyne and everyone else who was dusted by the Infinity Stones-wielding Thanos will be brought back, but since Ant-Man 3 is in consideration, there’s a good chance Scott and the gang will be around for Phase 4.