On the lack of Fantastic Four announcements:
So there were all these rumors leading up to D23 of a cast reveal and going forward here some ways to temper expectations. Feige for the most part, does not want to make big casting decisions without getting input from his director. There are exceptions like Mahershala being cast early on for BLADE role but something where its a team like F4 or X-MEN, Feige would prefer that director input and since Matt only got job a couple weeks ago very unlikely any casting decisions were made.