The Yoga Book from Lenovo is a new 2-in-1 tablet that runs Windows or Android. It comes with the 'Real Pen' stylus with real ink so you can write on actual paper, and your notes will be digitized into the Yoga Book. You can also use the Lenovo NoteSaver application and use the Yoga Book surface to write on.
Lenovo's Yoga Book features an on-demand Halo Keyboard with Haptic Feedback. This means the keyboard shows up only when you need it. The haptic feedback gives it more of a real keyboard feel, and it uses auto-complete and auto-correct for improved accuracy.