Ok so Windows 8 is activated with a WMC key. I have made a custom Windows 8 WMC DVD that will accept my windows update key during install. This is done by using the activated files from prior install being placed on the DVD and a few other bits (same as PROWMC iso method on here.) I know installing with my custom WMC DVD then upgrading to 8.1 will work but i don't want to have to do this every time i wish to reinstall windows. Will there be a method for making a Windows 8.1 install DVD that will take the free WMC upgrade keys? I was thinking installing Windows 8.1 on an activated Windows 8 install then copying the activated files to the iso of Windows 8.1 (following same process for PROWMC). Unsure if this will work though.