This probably doesn't have anything to do with the DLC announcement, but it's worth posting:
https://twitter.com/notaxation/status/306455333495246850
Colin is a big supporter of All-Stars so it wouldn't surprise me if IGN gets the scoop.
Hmm... It's a busy time in PlayStation culture, so it could be something on PS4, Tearaway, etc.
Let's hope for All-Stars, though.