The Weekly Jump website recently updated its Saikyō Jump section with a listing of the next issue’s featured manga. The listing shows that the quarterly magazine will indeed contain a fourth chapter of Dragon Ball SD by Naho Ooishi, and thanks to preview pages posted along with the listing, we know it will center around the Majin Boo arc of the series. This “Autumn Issue” was released 07 October 2011 at a price point of ¥480 (~$6.25), and you can grab a copy for yourself from Amazon Japan.
Shueisha has also launched an offical Saikyō Jump website. There is not much there at the moment, but it does state that on 03 December 2011 the magazine will be switching from being published quarterly to monthly. It is unclear at this time if Dragon Ball SD will be continuing on once the magazine publication pace speeds up, but for now Goku is still prominently showcased on the website. Either way, we will be sure to let you know as soon as we find out.