The announcement says that emails (and, supposedly, art processing) have been slowed down a bit, but that they expect him back up and working as soon as possible. That's definitely expected. No word on whether he spent any time in the hospital, but they say they expect "a full bill of health very soon."
Very sorry to hear of the injury, but our thoughts and prayers are with both Jomaro and his family and friends. Hopefully, he'll be back healthy and churning out that great WoW character art sooner rather than later.