3DS eShop (Thursday) - Super Mario Land 2: 6 Golden Coins (Game Boy, $3.99)
They're supposed to be posting new 3D trailers soon for Super Mario 3D Land, Kid Icarus: Uprising, Mario Kart 7, Luigi's Mansion 2, Animal Crossing, Paper Mario, and Mario Tennis. Not sure if they're different from the E3 ones, and if they'll be in the Nintendo Video service or available through the eShop.
EDIT: There are six new videos up now (all the games listed save for Kid Icarus: Uprising) and they're in the eShop. At least the Animal Crossing one is different from the E3 preview - it's also in Japanese, which seems curious, but whatever.
The Lego games are always great. I usually wait until they're available for $20 though (they always are). I wasn't expecting to buy the 3DS at launch anyway, but I'll be waiting until there's a killer app that I'm interested in.