http://nintendo5star.blogspot.com/2010/04/first-pokemon-black-and-white.html

Some of them look exactly the same as the other DS Pokemon games, but the new details are tantalizing. Of course, I'm still waiting to hear on those new Pokemon species...been waiting for new cute Pokemon to cuddle.

Pokemart and Pokemon center have been integrated into one...and what's this huge tall building? Right..only the most important detail about Black/White- the camera angle is even lower than all the previous Pokemon games are. So environments finally look more three dimensional, like they should on the DS. This crazy tall building is actually looking more like your regular average city. You can see the Pokemon Center by the side, that proves it's a city.

I'm worried about how bit-sized the character sprites are though....would it be better if they zoomed in a bit? Pokemon battles look a bit rearranged too. I wouldn't bet on a full revamp of the mechanics though, but I do hope for some minor tweaks.

More scans on the game on the link above.