I spoke (briefly) with Carlos at the MMA Expo in Toronto and asked him if he was fighting again. He said yes in August in K-1 opponent to still be named.
Carlos is one of the nicest most personable people you'll ever meet and a great MMA mind and trainer.
I got to do a 3 seminar with him at the Expo and the man's mind on moves and techniques is so far a head.
I think K-1 is a brilliant company for brining the Ronnin back. Can't wait.