According to the Celtics Twitter page, Doc Rivers says BBD will go on the West Coast trip (after Christmas) and he could possibly play then.
Here's some additional info, courtesy Boston.com:
"I could probably make three of five shots with that hand," Davis said. "Probably not good enough for the game."
Davis said he has no restrictions on his workouts right now, but obviously he won't be able to return to basketball until his cast is removed. He says he can eat and even type with his broken right hand now with the new cast. Davis also said he is in shape (though Rasheed Wallace jokingly denied it at the next locker) and said he feels lighter than he has felt in the past.
He says he feels he is in game condition, but that decision will obviously rest with Doc Rivers.
"The Bic Mac Attack will be back soon," said Davis. "Soon."