Lego announced a new a new Mindstorms Kit, NXT, which will be available in August. The new kit comes with many new sensors, including vision, touch, sound, and light. Those sensors plug into the main NXT Brick via connectors that look like RJ-45 jacks. The kit will have software that is compatible with both PC and the Mac, has Bluetooth and USB 2.0 support. Suggested retail for this will be $249, and it will be available in August.