Sources at dblegends recently obtained this information:
Apparently during his time at Oz Comic Con 2013, Chris Sabat stated that FUNimation has obtained the license to dub Dragon Ball Kai: Buu Saga. He specifically said that there would be a total of 66 episodes. We reported last year about Toei Animation continuing Dragon Ball Kai with the Buu saga. So it is inevitable for FUNimation to work on DBZ Kai Buu saga, but it is currently not confirmed Chris Sabat actually stated this.
Now if this is in fact true, in the future we should be seeing a new released Dragon Ball Z Kai Buu Saga.