On the newest issue of the Shueisha´s V Jump Magazine it was revealed the story of Dragon Ball Super.
As you know it is placed after the events of the Buu Saga, and it´s supposed that ties with the events of the Movie of Freezer´s Resurection.
Here is the snipset (Translated by Anime News Network).
After defeating Majin Buu, life is peaceful once again. Ordered by Chi-chi to earn money, Goku works even as he wants to train even more. Meanwhile, Goten, about to become a brother-in-law to Videl, sets out on a journey with Trunks to find her a present.
Ok. So it´s before the movies then, Since Gohan is still not married with Videl. Although Bills and Wiss will appear (alongside “Chubby Bills” and “Female Wiss”). Oh well, let´s see how this pan out in July