Kick-Ass himself, Aaron Johnson has been making the rounds for his new Oliver Stone film Savages. Collider chatted him up for this very reason, and he said this on the subject of Kick-Ass 2:

It’s pretty much set to go, this Fall.  I think now Chloe [Grace Moretz] and Chris [Mintz-Plasse] are on board.  I’m certainly set up to do it.  Jeff Wadlow is to direct.  Yeah, I think it’s going to happen.

In regards to the original’s violent tone, Johnson reassured “It keeps the standard, from the first film.”

Matthew Vaughn’s Kick-Ass was great, great fun. In many ways, Johnson’s work in that film is probably my favorite Peter Parker incarnation – which is exactly the character he and Vaughn were going after.

There is of course a comic precedence for the continued adventures of Kick-Ass. Mark Millar and John Romita Jr. sequelized the original series back in 2010, though it’s still ongoing. The comic sequel picks up with Kick-Ass trying to form a team of superheroes to take on an assemblage of supervillains lead by The Red Mist. No word on whether the movie will follow that thread, but Matthew Vaughn’s continued involvement is at least reassuring. Jeff Wadlow, director for Kick-Ass 2, was hand-picked by Vaughn to be his successor for this. Vaughn is of course busy preparing for his sequel to X-Men: First Class, set to begin shooting in January.

No word on an official date, but Kick-Ass 2 is currently on track for a May 2013 release.