Yoga Book: The First Tablet for Natural Sketching and Note-Taking | Lenovo
Amazon.com: Lenovo Yoga Book - FHD 10.1" Android Tablet - 2 in 1 Tablet (Intel Atom x5-Z8550 Processor, 4GB RAM, 64GB SSD), Gunmetal, ZA0V0035US: Computers & Accessories
Lenovo's Yoga A12 Android 2-in-1 has futuristic touch-panel keyboard | Computerworld
$300: larger screen, less memory & storage, smaller price
"The highlight of Yoga A12 is the versatile touch panel that can be a smartphone-like virtual keyboard. It's a feature adapted from the Yoga Book, which was introduced last year.
The Yoga A12 has a 12.2-inch touchscreen, and a back-lit input touch panel replaces the hard keyboard. Lenovo said the virtual keyboard provides a user experience similar to on-screen ones on smartphones and tablets."