Select the Parallels Desktop menu on your Mac
Click Check for Updates
If you’re a risk taker, there is another option besides using a virtual machine client. (This option is not recommended for less advanced users, but I’m guessing that if you are even interested in installing a beta version of an operating system, and know what a virtual machine is, then you are an advanced user.)
You can use Boot Camp and install Windows 8 Consumer preview onto another separate partition on your Mac’s hard drive.
This is what I have done with both the Developer Preview and the Consumer Preview (except it’s on my PC.) One thing that I have to say is that on my Windows netbook, once the operating system is installed, it takes some work to getting your other bootable partitions to be available again.
In other words, Windows 8 has it’s own agenda for my netbook’s bootloader. I found a nice tool that allowed me to edit the boot menu, and it worked for the Developer Preview, but I can’t find it as of now. If I could, I would have put up a link to the download page. But basically for now, I’m stuck with the Consumer Preview for better or worse.
So now that you’ve heard my warnings please go ahead and install on whatever computer you have, be it Mac or PC.