***SPOILER ALERT, OBVIOUSLY***
In the first scene... [Spoiler (click to open)]Mysterio is revealed to have been killed and JK Simmons returns to play Jonah J. Jameson, who plays a video of Mysterio revealing Peter Parker is Spiderman on Live TV. Peter is shocked.
In the second scene... [Spoiler (click to open)]Maria Hill and Nick Fury are revealed to actually be Skrulls, but good ones... Talos and his wife from Captain Marvel, who are calling Nick Fury who's on vacation in a space ship... is this some sort of introduction to Secret Wars?
Source. In case it gets deleted, alt link for scene 1 and scene 2.