Dragon Ball SD has officially debuted today in Japan and it would appear that it’s actually a remake of the original Dragon Ball manga. This remake will contain the same events that happened in the original manga, but told differently; it begins with the story of Goku and Krillin training with Master Roshi. Also note this new manga is a full series, and not a one shot as it was speculated to be previously. More scans should be posted soon, and hopefully we can obtain the entire first volume.
Update: The entire first chapter translated in English is now available here! Thanks goes out to Manga Stream for the provided translations, all credit goes out to them!
And if you live outside Japan, you can pick up your very own copy of Dragon Ball SD at Amazon Japan! In the mean time, stay tuned to DB Legends when more chapters of DBSD are released. We will make English translated versions available again if provided.
Source [Capsule Corp and Manga Stream]