"The Pokemon you get near the start of the game are Mukkuru, Subomi, Buizeru, Perappu and three new Pokémon; Garinan, Samusamu and Maasura
The first gym leader is Zak and he has 2 Diglett and a Maasura
There is also a new attack called Giga Horn"
From Serebii on SPPf. Translated by Coronis. It came from the same person who claimed he saw the starter figurine ahead of time and described them and was right. Let's hope he is right again. I think his name is blue skY. I don't have a direct link to the blog, but if it makes it better, Serebii's front page has it.
EDIT: Blog found. http://raim2005.blog18.fc2.com/