Italian-based website window8italia reports that Windows 8 will arrive with two separate interfaces, one for 32-bit and one for 64-bit. The latter version will be fully 3D and codenamed "Wind," requiring around 170 MB of dedicated video memory. Although "Wind" will reportedly exist in all copies of Windows 8, it will not be activated within the 32-bit version.
The news follows a recent discovery in Nvidia's Quadro 265 driver which specifically references a new kernel with the number 6.2-- Windows 7 is 6.1. The driver actually points to the 64-bit version of Windows 8 specifically as listed in the following:
; Nvidia Windows Vista / 7 / 8 (64 bit) Display INF file DiskID1 = "Nvidia Windows Vista / 7 / 8 (64 bit) Driver Library Installation Disk 1" Nvidia_Win8 = "Nvidia"
In addition to the 3D aspect, the 64-bit interface will reportedly be "fully dynamic" in that it will adapt to the user's habits. This includes the ability to speed up daily tasks by adapting shortcuts and icons to fit within different usage scenarios.
Previously we reported that Windows 8 will be heavily cloud-dependent, requiring the user to sign into an account stored on Microsoft's cloud servers. Security will also supposedly be cloud-based, storing key kernels with the user's account. This will seemingly help reduce the amount of piracy, requiring Windows 8 to virtually "check in" online each time the desktop or laptop boots into the OS. It's also believed that Windows 8 will backup core components on the cloud servers for recovery purposes.
Window8italia also mentioned that Windows 8 may include a fast hibernation system. This would put the desktop or laptop into hibernation mode between three to six seconds while also saving the state of running tasks and open documents.
As always, the features listed above aren't official, so take them as mere rumors for now. Even if some of these are based on leaked facts, Windows 8 isn't slated to go retail for another two years, so anything could change before then.