Are they making a new Dragon Ball Z series

Akria Toryama said that he's not making another dragonball z saga but some people are saying that he might make another one called dragonball af in 2012, but he wont, the reason that the Z was added was so people could see it was the end of the series, if a new series comes out its not from the original manga artist, even Dragon Ball GT wasnt from him it was written in america