It's the continuation of the Dragon Ball GT saga. It's not made by Akira Toriyama, but by toyble (now known as Toyotaro). So this series is not to be confused with the Akira Toriyama Dragon Ball April's Fools which was a hoax.

NOTE: The final volume of toyble's AF (Volume 5) has recently been completed by Rogeru who used drafts drawn by toyble.
After this, the story is still incomplete since the fictional author (toyble) is on hiathus while the real author (Toyotaro) is hired by Shueisha.
Volume 4.5 has got in the final part the real ending of the DBAF story skipping the events of the Xicor saga.