The newest installment of the Dragon Ball franchise is Dragon Ball Super, debuting this summer.
The last time television saw a new Dragon Ball series written by the franchise's creator, Akira Toriyama, it was 1989. The series picks up after the defeat of Majin Buu in Dragon Ball Z, in a time of "relative peace." Probably things won't stay peaceful very long. At the very least we can anticipate a lot of yelling.
The official website also released this key art: