The new “Super Saiyan God” form is a legendary form among the Saiyans that needs the power of six pure-hearted Saiyans. “Super Saiyan God” had appeared on Planet Vegeta once before to stop evil Saiyans, but he failed due to the form’s time limit.
Goku reaches this “Super Saiyan God” form — looking similar to the image seen on a Toei Animation office poster — surrounded by a red aura. Goku returns to his regular Super Saiyan form, but has now felt the form’s godlike power and is able to tap into it.
While there are only five Saiyans seen in the movie (Goku, Vegeta, Gohan, Trunks, Goten), there is actually a sixth: the one currently growing inside Videl (Pan)! Dende is the one to notice the pregnancy as he heals Videl from inadvertently being shot by Mai, all thanks to a drunken Gohan.
Pilaf and his gang make a wish to Shenlong to restore their youth, but are then made too young.
“Uisu” does not fight at all, but “Birusu” reveals that Uisu is his martial arts master and is even stronger than he is.
Birusu reveals that there are actually “12 universes”, and what see in the Dragon World is but one of them — this ties in with the seemingly-out-of-the-blue notation in Chozenshu 1: Story & World Guide that states Planet Earth, where Goku & co. live, is Planet 4032-877, and is part of the “Seventh Universe”.