Last month, Toei announced their initial home video release schedule for the Majin Boo arc of Dragon Ball Kai: simultaneous DVD and Blu-ray box sets with ten episodes each. At the time, the first three boxes were announced for 02 September 2014, 02 December 2014, and 03 March 2015 respectively.
While not yet listed on Toei’s own website, Amazon Japan has entries up for the fourth DVD and Blu-ray sets for 30 June 2015 covering episodes 135 to 146.
As with the three Majin Boo arc sets, the fourth set is listed as widescreen only. In Japan, though the TV broadcast was cropped into widescreen, the first 98 episodes of Dragon Ball Kai (the Saiyan, Freeza, and Cell arcs) were released in its original 4:3 aspect ratio on Blu-ray, while the DVD release was cropped into widescreen. In North America, FUNimation released both the Blu-ray and DVD versions in their original 4:3 aspect ratio.
Toei’s European branch, when announcing localized broadcasts, pegged Dragon Ball Kai‘s Majin Boo arc at 69 episodes (down from 92 in the original version of Dragon Ball Z).