I really hope they do sort it soon, I need to use Windows a lot, but one of the reasons for getting the MBPr with 16GB Ram was to have enough grunt to run both Windows and Mac OS at the same time.
Rather than having to go into Boot Camp for a native boot into Windows to get a proper experience.
I think Parallels works really well. I have used VM Ware a lot, and still do in work to run a Windows VM inside Windows.
I've been getting great performance so far in both Windows and Mac OS when running them side by side, no noticeable performance issues, just the visuals in window...look terrible as described.
Good to know they are working on it though.