Pokemon Black & White 2 Japan trailer

The first trailer for the next Pokemon game surfaces. This is the first sequel to a Pokemon but to me I have a feeling they ran out of colors or gems to name they're games. Sadly I don't speak Japanese and I have a feeling you guys don't too, but we get a glimpse of the sequels gameplay and well it looks pretty much the same to me.

Nintendo has already announced that Pokemon Black and White 2 will be hitting North America by Fall 2012 so an english port is definitely in development. Japan of course get's first dibs on the game on June 23 for the Nintendo DS.

My biggest question since the game's existence is - Why is this a Nintendo DS game? Why not 3DS? I think everybody can agree that Nintendo needs to increase the number of games heading to they're latest handheld device since most of the big titles are already out. After the release of Kid Icarus: Uprising, I don't see much incentive to buy a 3DS.