thanks, that makes sense.
are these versions usable for an everyday OS?
i know its the first version, but can i use this on my mbp as my main OS? thanks guys!
I really, really wouldn't recommend it - it's the first preview version so will probably have loads of bugs in it and won't be feature-complete.
I'm hoping I can install it in a Fusion VM, but failing that it will go onto a separate partition so I can dual boot when I want to try it out