There’s a lot to unpack regarding all the ways Seven Of Nine has had changed thanks to Q. She’s not the only one, either, as the Star Trek: Picard Season 2 trailer also showed Cristobal and Picard back in Starfleet, though not together.
Raffi is running with someone through a seedy back alley of some sort, Agnes seems to be wearing inmate clothes, and then Elnor can be seen in the background of a shot with Raffi, Picard, and Agnes, but I’m not really sure what’s changed for him.