Oh, so that's why there were so many drops...
I kind of wish they had recast T'Challa too. I don't have anything else to say about that, mostly because I have no idea how that is going to play out.
As for the stuff in the trailers, I have no idea what's going on with the Loki show. What even was that? Gotta admit, I'm interested - it looks like he might be a bit more of a villain in this? Of course, trailers can be misleading.
WandaVision - again, I can't figure out what's happening there. I know it's based off of a comic run, but I know nothing about it. Looks like she's made herself a world where Vision is there?
What If? looks good - I did legit think Bucky was Kaladin for a moment, which was funny to me. (Zombie Steve... brrrrr) And as a fan of Peggy, I want to see this. I really want to see this. (Also, why does there have to be punctuation in the title?!)
Finally, Falcon and the Winter Soldier looks awesome and funny, and I'm intrigued by the hints of the story.