Black Panther 2, Guardians 3, Dr. Strange 2, and the Black Widow prequel are all part of Phase 4. No word on whether Thor will be part of Guardians. Since Hemsworth's contract is up IIRC, I imagine he either won't or he would be in limited capacity at the beginning, maybe.

Captain Marvel 2 will definitely happen, tho maybe not til Phase 5. But the first one was a huge hit, so yeah, it's going down.

The new Spider-Man comes out in July.

There won't be more Cap/Iron Man movies in the near future, probably next decade-- I imagine they'll bust out Sam/Rhodey as side characters in other flicks. Same for Bucky, same maybe for Valkyrie (though I imagine she's mostly through).

However, if they did what some people had theorized could happen and make Shuri the new Iron Man, they'd make a movie starring her, I'd wager. But since they didn't do any leg work toward any new Iron Man movies in this flick, I imagine that franchise is done.