Nope, there hasn't been some tragic attempt on Vin's life. Rather he has signed on to play Agent 47
in the movie version of Hitman.
Having mulled it over for a few minutes, this is a pretty good bit of casting. Sure, Vin isn't the greatest actor around, but he's A) bald, and B) suitably badass enough to pull this off. I mean for all it's problems, XXX wasn't bad. *crickets chirping* Plus, if stories are to be believed, Vin is a big gamer, so hopefully he won't want to see the game license messed up.
There's also a good possibility that Vin will also become the face and voice of Agent 47 in future games.
Engadget
TUAW