Microsoft's physically-innovative touch mouse changes shape

Rumor has it Microsoft will soon be releasing the inchworm-like Microsoft Arc Touch Mouse, which folds flat for storage, then bucks into ergonomic shape when it's time to work.

We like the concept of a physically mutable input device and are intensely curious as to how it changes shape. Is it mechanical, like you push a button and it morphs? Is it user-bendable and adjustable? Most importantly, when the heck is this thing coming out?
via engadget