The word going round, is that the voice actors for DBZ KAI are coming back in to do more voice work for the show. Which means the fans that wanted to have the Buu Saga are going to probably now get those episodes, but there is a catch.
The new episodes are supposedly not going to air in domestic Japan. These are going to air elsewhere, which is a major drag for some, and a blessing for others.
There is no word yet on if FUNimation is getting them yet