The questions -- if this does happen to be true -- are as follows:
• Will this be a new series, a one shot, or a few one shots?
• Will it be set after the end of Dragonball Z?
• Will it star Goku or one of his kids or what?
• Will it have any connection with the TV only series Dragonball GT?
We have no answers and, at the moment, no proof that this is happening in any way, shape, or form. But I don't know, I'm kind of feeling this. Toriyama has effectively been retired for 15 years so he could swim in his massive vault of yen, Scrooge McDuck-style, and so he could fuck every prostitute in Japan, and then the world. He's got to be a bit bored by now, and I imagine every single Shueisha employee would give him a million yen and a blowjob per Dragonball panel. Even if he only draws three panels, he's happy, and Shueisha is happy, if a bit sticky.