As a couple posters already mentioned, cloud is the thing! More dimensions for heavy business users. Integrated virtual machine would be a great plus with XP, 7 and Ubuntu vhd's already on the installation media, which I'd like to buy as a USB flash drive.
And, of course cheaper volume licensing also for smaller companies. Windows 7 Home Premium Family Pack is a good idea, why not for example "Win8 Business 3" - one install medium, three licences.