I'm playing it right now, and the one thing I can say is that this is VERY pretty. Like, they've completely redone a lot since Black and White, while keeping the same overall graphical style. You'll see what I mean.
Apparently this also has DSi-mode/3DS-mode features (actual 3D?) but I can't confirm because I only own a lite. Anyway, I quite like this game so far and am definitely going to be buying it once it's localized over here.
BTW, there are a few major bugs that I can see thusfar, for example when I attempt to enter my female rivals house the game crashes, and when I attempt to go back into my room, I seem to teleport into some dev area.