Finally saw this now that it is out for home viewing. Thought it was fun and a solid enough send off of the original avengers. Time travel is always tricky, but I thought it worked out fine.
They've released most of the Phase 4 schedule
Black Widow - May 1, 2020 (takes place after Captain American Civil War and before Avengers Infinity War)
The Eternals - November 6, 2020 (cast is fantastic led by Angelina Jolie and Salma Hayek)
Shang-Chi and the Legend of the Ten Rings - February 12, 2021 (dubbed a martial arts film with a mostly Asian cast in lead roles)
Doctor Strange in the Multiverse of Madness - May 7, 2021 (dubbed a horror film - also stars Scarlet Witch)
Thor: Love and Thunder - November 5, 2021 (Jane Foster takes up the hammer - Valkyrie is still King of Asgard on Earth)
Future Movies without release dates or official Titles (though Marvel has blocked off February 18, May 6, and July 29 2022 for movies)
Black Panther 2
Captain Marvel 2
Guardians of the Galaxy 3
Blade (Mahershala Ali takes on the title role)
Spider-Man 3 was not officially announced for Phase 4, but that July 29, 2022 spot would seemingly fit with when Spider-Man movies have been released in the past.
They also announced some of the shows (or at least the characters getting shows)
The Falcon and the Winter Soldier (Fall 2020)
Wandavision
Loki
Hawkeye