Surface will sport a ARM processor while Surface pro will have core i5 processor. Also, Surface will be supported with Windows RT operating system while Surface Pro will run on Windows 8 Pro.
A 10.6" display, touch sensitive keys, gyro sensor and accelerometer sensor has been announced common to both tabs.
Pricing is rumored to be around 599$ for Surface and 999$ for Surface Pro.
The Surface version is to be released on October 26 and the Pro version three months later.
Will post a complete spec list as soon as the tab is released.
