Jake Gaskill is currently playing inFamous 2 at GDC right this very second, which makes us all jealous of him. But more exciting than that is the announcement that Sucker Punch just made about their baby: players will be able to generate their own user-created missions in the game, and if they get popular enough, they will show up in the single-player game.
The key fact you'll want to know to know is that the kit includes everything they used to make the actual game, plus some stuff that's exclusive to the user generated tool set. According to Jake, "There will be filters that will let you choose what types of user-generated missions you want to show up. Mission start locators will stream into the actual single-player game, so you'll see them as you run around. Filters will keep it from being too crowded.
But if you want the full story, head on over to the inFamous 2 User Generated Missions Preview. But before you do that, head on after the jump to see a couple of images explaining how user-created missions will appear in the game.
Additionally, there will be a beta launching in early April, and the best beta levels will be chosen to be available in retail game when inFamous 2 launches on June 7th. Which, coincidentally, is the very first day of E3. Details about how to get in the beta will be revealed on March 14.