Granted, this is a decidedly male back pocket and not the ass-hugging skinny jeans of Vaio P ad fame. And it still looks like it's filling that zone halfway between concept and actual product (as the actual concept sketches that accompany the shots on Lenovo's Flickr stream would seem to indicate) but it does look cool, with an ultra-widescreen, apparently touchscreen display that may be able to flip around into tablet mode.
Also, look at that crazy belt clasp system. According to one of the Flickr captions, that belt also turns into a mouse. Mind blown.
All we've got not are these shots, so we'll have to see what pops up in terms of concrete details.
UPDATE: Sadly, the folks at Lenovo's design department have outed the Pocket Yoga as a two-year-old concept. Why photos of it showed up on a Lenovo Flickr stream earlier today is anyone's guess, but as of now, they're denying that this is an actual upcoming product. Boo. [Lenovo Design Matters]