If it really does everything it promises..
If it really does what it says on the tin, then I will be upgrading as soon as it is stable. While I live and work in an almost totally Linux world, I still need to keep a toe in MS waters to deal with associates who still live there. VMs are essential tools for this. VirtualBox is my preferred software for doing it.
Drag and drop / cut and paste between OSs in VirtualBox can be very hit and miss at present and, while there are workarounds, they take time. Any improvement to this basic process will be very welcome. Also 3D acceleration which, although it is available as a setup option, can also be a bit iffy in practice.
The other enhanced capabilities look good too... Let's have it as soon as possible.