They have been since ver 2.5 back in 2007. I know it was there back when I used Parallels and I didn't have any problems. There were (are) a few caveats to sharing the boot camp windows installation - like not suspending windows before launching into boot camp - but overall it worked flawlessly. The only reason I stopped using parallels was because I rarely used windows and virtual box was/is free.Parallels supports the importing of a BootCamp partition into a Parallels VM. No mention in the help file about blue screens etc.