Engadget compiled a list of things they learned about Windows 8's hardware requirements:
Controversially, ARM-based tablet users won't be able to deactivate secure booting and (therefore) install another operating system. Clearly that's not gone down well with people -- and a straw poll of our editors agreed
Ctrl + Alt + Del for tablets without physical keyboards will be supplanted by Windows Key + Power.
There's a mandatory five points of touch -- which we already knew thanks to our hands on with Synaptics at CES.
If your gear has NFC, physical "touch marks" will be visible on the hardware so people know where to plonk their devices.
All tablets must have Power, Rotation Lock, Windows Key, Volume Up and Volume Down buttons.
After all operating system updates, there must be 10GB free space, all machines must run UFEI Firmware.
All hardware must include one USB 2.0 port, a magnetometer, speakers, Bluetooth 4.0, WLAN, gyroscope and accelerometer.
Any camera must have a minimum resolution of 720p.
The minimum display for any tablet is 1366 x 768.
You'll be able to update your graphics drivers without rebooting.