After giving it some thought, here are some things I'm expecting out of this new series:
- It takes place after Z. Bulma mentions in the final episodes/chapters that her and Goku haven't seen each other in five years, which fits in the time table with the new movies.
- Goku's still the main character. He might train Oob, but TOEI isn't going to let anyone upstage Goku. Toriyama won't either.
- It involves the various universes spoken of in Battle of Gods. Honestly, this concept isn't really quite ripe for a movie I feel as it'd get repetitive if all Goku fought in these movies was more guys like Beerus. However a TV series would be perfect for this and it wouldn't surprise me if the final arc ends up having Goku fight all the various gods.
- It won't overlap with GT. There will be a lot of plotholes but nothing will outright replace GT aka it won't be taking place 10 years after the End of Z or anything like that. TOEI wants to get DBGT a strong property so they can use it in merchandise. There will be plotholes ala the Pilaf situation but overall it won't directly conflict with each other.
- Toriyama's involvement will be minimal at best. This is somewhat confirmed already, but I have a feeling his involvement with this series will be overstated by the fans to give this series legitimacy.
- Dragonball Online content. Xenoverse already makes use of some, as does Dragonball Heroes. Toriyama wrote and designed a lot of stuff for this game, so it wouldn't surprise me if he included them in his new plotlines aka Mira and Towa involvement and the Time Breakers storyline.