No Sunset Overdrive 2. Insomniac confirms its not in development.

[SamLeheny]

The first one wasn't that great. Very "this is what the kids are into these days, right?... right?!"
But that's fine, I want them focusing on that Spider-Man game. I want them to make damn sure it lives up to what we know a Spider-Man game can be when there's actual effort involved.