Just last week I was bemoaning the fact that neither Parallels nor VMWare Fusion provided an easy way for a developer to create a virtual machine (VM) for testing of OS X Mavericks, so I ended up installing the new Mac operating system on a separate partition. Today Parallels released an update to Parallels Desktop 8 for Mac that not only allows the update of existing OS X VMs to OS X Mavericks, but also allows Mavericks to be a host machine for Parallels.
If there's a downside, it's that you still can't install OS X Mavericks on a blank VM; instead, you'll have to install a previous
