There aren't any huge surprises from Nintendo: more games in existing franchises, more hardware, but more riffs on existing themes. But we knew that was; it's how they're riffing that is always interesting.
To whit: The new "Wii Vitality Sensor" (I titter so you don't have to), a heart rate monitor that clips onto your finger that will let the Wii know when you're really blissed out.
Brandon's got everything you need to know about Nintendo's upcoming product lineup, including new titles (New Super Mario Bros. sidescroller! A create-your-own-minigame WarioWare: DIY title?!) and such over at Offworld.