Virtualize Like a Maverick
Parallels has released an annual upgrade ever year since it was released, but VMware tended more towards the 2 year mark between major releases. Now, though, both companies are releasing new versions in lockstep with new versions of OS X, and if you are serious about running Linux or Windows on your Mac, you’ll be upgrading both OS X and your virtualization tool of choice each year. And this year, you’ve got more choices than ever as both apps are trying harder to appeal to casual users and the more advanced needs of IT teams.
He says that the previous versions work fine with Mavericks, however.