One of the things launched at the PDC is Windows 7. A number of new features where mentioned but the one I find most intriguing is being able to boot of a virtual hard disk. I use VMWare quite a bit, in fact I do most of my development in virtual machines, but that always means running a copy of Windows inside of Windows. Now the host Windows is actually not doing all that much except host the virtual machine and, being Vista, eat a lot of resources in the process. So the ability to get rid of the host and just run the virtual machine seems like great feature.
Another interesting thing is that Microsoft seems to be pushing Windows 7 with the first beta starting real soon. My guess is they want Windows 7 to replace Windows MEsta (oops that should be Vista) as soon as possible.
Enjoy Windows MEsta in mean time.