I do consultation for a company called Jukin Media. They do work with companies like Disney. During the lead up to Infinity War you may remember a "Trailer Announcement" video that consisted of YouTubers reacting to moments in previous Marvel Trailers. Jukin put that together.
They were tasked with putting together a reel of all the fan footage from past Marvel Comic Con announcements. The Avengers assembling on stage, Chadwick Boseman being announced, etc.
A montage of sorts is shown of title logos, concept art, and interviews with the directors.
First Cate Shortland and Scarlett Johannson talk Black Widow. Some cool concept art is shown but nothing new
Then Ryan Coogler talks Black Panther 2. Talks about how TChalla's 5 year absence has put the throne into question again and new threats to Wakanda have risen. Art of TChalla shirtless fighting a large jungle cat with his bare hands is shown.
Scott Derrickson talks Doctor Strange 2, confirming that with Strange as Sorcerer Supreme, things are about to get weird. Art of Nightmare is shown and looks awesome.
Destin Cretton talks Shang Chi, says that it will bring a whole new brand of old school martial arts action into the MCU. Is excited to bring the first asian superhero to life on screen. Art of Shang Chi fighting off ninjas is shown.
James Gunn talks Guardians 3. Says it's a story about bringing a family back together, and how they can survive without each other. Concept art confirms Thor is in the film.
Jon Watts talks Spider-Man 3. Titled Home Sweet Home. Says that Peters identity being exposed changes everything. And now he'll have to face threats coming at him from every angle. No art was shown except for the title logo.
Finally Chloe Zhao and Kevin Feige talk Eternals. Call it "possibly Marvel Studios most ambitious project yet. Maybe even moreso than Infinity War/Endgame" show lots of insane art in a very fast paced montage that builds to a grand animated reveal of the logo.