Microsoft has a teaser up on their hardware site with the tagline "Say Goodbye to Laser." Most likely a hint regarding the upcoming Sept. 9 Microsoft event, we can only assume that Microsoft has developed an alternative to the near-perfect laser mouse or maybe made a breakthrough in "optical" media. (Well, one of those choices, or they've developed an advanced rail gun/microwave/nuclear technology that the Navy and DARPA will pursue instead of high powered beams of light.)
UPDATE: As our clever commenters have discovered, it's probably this product.
Our mock-up after the jump.