If you're in the Club Nintendo rewards program, you can now exchange your "coins" for a selection of free games, rotating monthly. This month's selections for the 3DS are 3D Classics Xevious or Mario vs. Donkey Kong: Minis March Again, available for 100 coins each.
There's a new 3DS firmware update out. It ads 3D video recording, DLC capabilities, and StreetPass Mii Plaza updates (including Find Mii 2 and new Puzzle Swap puzzles).
DSiWare (Thursday) - Word Searcher 4 (500 pts) - Castle Conqueror - Against (500 pts)
Looks pretty solid, with new 3D portable version of Mario 64, Mario Kart, Metroid Prime, Animal Crossing, and others. And it's got a new 2D Mario. WI-FI capabilities, and a touch screen. Looks like a solid machine to me. http://gameboy.ign.