The controller is the Lego Play and Build Remote for the Nintendo Wii. The controller is multi-colored like most of the Lego bricks we are all used to seeing. The thing is a fully licensed controller and is compatible with most charging docks when used with the standard battery door and it ships with a second battery door that you can actually use your own Lego blocks to build a holder for.
The controller is fully compatible with MotionPlus as well. It has an internal speaker, rumble effects, and larger buttons for better control. Lego ships it with a wrist strap, two battery covers, and 31 mini Lego tiles and a Lego tile separator. You can pre-order the controller now for $39.99 and the estimated ship date is October 16.