I'm about to build my new PC (hopfeully this week) and have Windows 8.1 OEM to install, but with the lastest Windows 10 preview I'm considering just installing that. I heard them on the NZ Tech podcast this morning that you will be able to upgrade straight to the finished build when it's availble. I'm guessing I can just use my windows 8.1 key to be able to upgrade for free.
It would save me the hassle of setting up everything on Windows 8.1 and then having to start again a few months down the track.
Silly idea or not?