The “Toei Animation Online Shop” has posted a listing for the fifth and final Blu-ray box set of the “Majin Boo arc” of Dragon Ball Kai. Set to be released 02 September 2015, this box set will contain episodes 147 to 159 of the Japanese broadcast version of the series and will come packaged with an exclusive booklet.
This listing provides the first concrete episode count for the Dragon Ball Kai series, confirming that the Majin Boo arc will conclude after 61 episodes. This brings the series’ total episode count to 159, at least for the Japanese version of the series. As of this post, the TV schedules for most major networks (including Fuji TV) have been released up through June, which have episode 159 scheduled to air on 28 June 2015. Assuming there is no break between the end of Dragon Ball Kai and the beginning of Dragon Ball Super, the latter will begin syndication on 05 July 2015.