Pokemon Black and White 2-Now with a sexy rival.

lesson learned:
dont pick snivy

black & white felt small... now half the same map is covered in ice??
thered better be another map they havent released yet.

The fact that there is a path leading to the ice and that the Pokemon League is covered in ice suggests that it will disappear at some point (probably when Black/White Kyurem is defeated), opening up the iced over areas for the post-game (kinda like how the east side of Unova opened up in the first game)