Thanks to a scan in this weeks Jump magazine, it seems that Kuma will be playable in One Piece: Pirate Warriors 2. However, the really interesting news is that he is fighting zombies in the scan. This could mean that Thriller Bark (one of the missing arcs in Pirate Warriors) will also be included, though this is nothing more than mere speculation.
Currently One Piece: Pirate Warriors 2 is set to release on March 20th in Japan and this Summer in Europe. Still no word on a US release, but we will probably hear more after Ken’s Rage 2 releases.