The iPad Pro
Same or similar form factor as the iPad Air
Intel x86_64 processor
Wacom digitizer with pen option
OS X 10.10 Yosemite (instead of iOS)
I decided to install OS X Yosemite on my tablet (Samsung ATIV 700t) and I noticed something interesting after the install, Full pen and touch support on a vanilla install (No multi-touch --yet-- but it is a beta) This got me thinking, and I didn't have to think hard, it is Apple afterall. More devices = more money.