It's been more than 17 years since Dragonball Z last had any new animation, so the movie Battle of Gods would be a big deal even if it hadn't been penned by creator Akira Toriyama himself and thus an official part of DBZ canon. But as this first-ever English trailer shows, it looks amazing anyways.
Here's the official synopsis:
Following the events from the Dragonball Z television series, after the defeat of Majin Buu, a new power awakens and threatens humanity. Beerus, an ancient and powerful God of Destruction, searches for Goku after hearing rumors of the Saiyan warrior who defeated Frieza. Realizing the threat Beerus poses to their home planet, the Z-fighters must find a way to stop him before it's too late. Only Goku, humanity's last hope, can ascend to the level of a legendary Super Saiyan God and stop Beerus from destroying Earth, and possibly the entire universe!
So apparently Goku finally just becomes a god in this movie? Okay, that tracks. In his final battle in the manga and anime, he launched an attack that used the spirit energy or every being in the universe, so I guess straight-up omnipotence/omniscience is the logical next level.
For more info head to DragonballZ.com.