There has not been an official Dragon Ball anime series for roughly 18 years. That changes this July.
Dragon Ball Super, a new DBZ series from Akira Toriyama, will reportedly start "a few years after the defeat of Majin Buu, during a time when the Earth is peaceful". There's no real details at this time. The main question on most minds is just where will the series begin in terms of continuity, before or after the new films? Expect more details to be revealed as the series premiere date draws closer.
Earlier this year, Toei Animation released a second, new Dragon Ball anime, Dragon Ball Z: Ressurection of F. It premiered in the US on April 11 in Los Angeles. Toei has announced plans for a wider, dubbed release of the film later this Summer.