Windows 8 could feature a new graphical user interface codenamed Wind, according to a third-party source. "It appears that Microsoft's cooking two user interfaces for the next version of the Windows client dubbed as Windows 8."
"One will be designed for usage in scenarios involving machines with limited hardware resources and for the 32-bit (x86) version of Windows 8 (expected to be released by mid-2012). The other however, reportedly codenamed Wind, will be tailored to 64-bit (x64) computers with powerful resources, as it is said to require as much as 170 MB of graphics memory alone."
Codenamed "Wind" would be the evolution of the current Windows Aero in Windows 7, but it'll be taking the UI to the next level in Windows, including enhancing the UX with 3D effects, although it'll also work fine with older monitors.
More importantly, Windows 8's Wind will be dynamic, and intelligent enough to adapt itself to the user.