Unnamed sources told the Wall Street Journal that prototypes exist, and are actively being tested, but beyond that specifics are sparse. There's no telling when this could come out (if at all), what kind of features it would have, or what the price point would be, all of which are pretty crucial details.

But if you had any doubts that Microsoft is keen to grab a slice of the "on your face market," it looks like you were wrong. [Wall Street Journal]