Surface, the new Microsoft Tablet.

Will be two different base models, one with Windows RT, and the other with Windows Pro 8 Each one of these models will have sub-models with different capabilities.

Windows Model RT

     Operating System: Windows RT
     Processor: ARM (nVidia Tegra 3 +)
     Weight: 676 g
     Thickness: 9.3 mm
     Display: 10.6 "HD Display ClearType
     Consumption: 31.5 W-h
     Connectivity: microSD, USB 2.0, Micro HD Video, Antenna MIMO 2 × 2 MIMO
     Camera: Front and rear
     Software: Office Home & Student 2013 RT
     Interface: Touch Cover, Cover Type
     Cover: VaporMg Case & Stand
     Capacity: 32GB or 64GB

Windows 8 Pro Model

     Operating System: Windows 8 Pro
     Processor: Intel Core i5 Ivy Bridge
     Weight: 903 g
     Thickness: 13.5 mm
     Display: 10.6 "Full HD Display ClearType
     Consumption: 42 W-h
     Connectivity: microSDXC, USB 3.0, Mini DisplayPort Video, 2 × 2 MIMO antenna
     Camera: Front and rear
     Interface: Touch Cover, Cover Type, Palm Block with Pen
     Cover: VaporMg Case & Stand
     Capacity: 64 GB or 128 GB

Cover Type: Cover with physical keyboard

Touch Cover: cover with touch keyboard

Images from Microsoft official site, you can see more about surface here Surface by Microsoft