Legit Reviews delivers word that Leap Motion's Leap controller will arrive by December 2012 or January 2013. The firm is currently taking pre-orders for this motion controller for $69.99.
Unlike Microsoft's Kinect, the Leap tracks finger movements with precision down to a 100th of a millimeter, allowing precise interactions with the computer, on the same order as using a mouse. In fact, the company makes the bold claim that with this device, one can "say goodbye to your mouse and keyboard." That remains to be seen. The company's About/FAQ page is here. Note that as of this writing, Leap Motion haven't revealed the specifications of the device or gone into any significant detail into how it works. The video below demonstrates what the device can do and does look impressive. However, it would probably be wise to wait for a review or two before spending hard cash on a new, unproven product from a new company.