Microsoft is not building just a new version of the Windows client, with Windows 8, the company is laying the foundation for future Windows releases, in terms of natural user interface evolution.
NUI models are already widespread, but they’re still far from being ubiquitous, and there’s one frontier that has yet to be conquered, Windows computers.
The vast majority of Windows PCs today lack support for touch interaction, but this detail is bound to change following the advent of Windows
Windows 8?s NUI Foundation, a Windows 9, Windows 10 Investment - Softpedia