The first Yoga book with the Halo keyboard, a touchscreen which shows a keyboard as well as accepting input from a stylus, did not get high marks from Ken when he reviewed it last year.  The concept itself was not the problem, it was the lack of any travel on the trackpad and keyboard, even enabling the tactile feedback was not enough to help with typing or clicking and dragging icons.  For short tasks it was acceptable, once you grow accustomed to the interface, but you wouldn't want to compose a lengthy document.  The next generation will have an faster processor as well as AI to assist with typing, one expects predictive text a la most mobile phones and improved stylus input. 

You can see a bit of the brief tease they offered over at The Inquirer.

"Teased during Intel's keynote at Computex, where the chipmaker unveiled a 'limited edition 5GHz Core i7', Lenovo's Yoga Book 2 retains the firm's unusual 'Halo keyboard'. Basically, it's a second screen, with a touchscreen surface acting as a digital keyboard."

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