The Lenovo ThinkPad Helix has been a known entity for some time, first showing up on the company's Israeli website and more recently stopping by the FCC with AT&T LTE in tow. The device is no longer an enigma, as Lenovo is pulling back the curtain on the 11.6-inch convertible Ultrabook, which will go on sale in late February for $1,499 and up. Like the famously flippable ThinkPad Yoga, the Helix
