The 3DS is Nintendo's current name for its successor to the Nintendo DS. The 3DS will display 3D effects – similar to movies like Avatar - but without the need for special glasses. Some developers that have seen it claim that it has power close to that of a PS3/Xbox 360. (IGN said that). You'll be able to turn the 3D on/off, and there's rumors that the console will have an analog control stick, rumble, and a movement detector (accelerometer). You'll be able to play DS/DSi games, so it will have cameras too. We'll have more info on E3. The bad news: They've said it will be nearly impossible to pirate, let's see if that's true...
Very true. Most people I know don't even know what E3 is and they're all "gamers"... : That I already knew about.