New
#41
That statement was meant to reflect that you would not have to clean install the RTM if you are now running the Preview. That's all. In the past if you were running a beta or preview release there was no upgrade option to the final release. You hade to reinstall to get the final. The question now is, if you clean installed the preview will the RTM be fully activated when you upgrade. Indications are if you originally upgraded from Windows 7 or 8 to the preview you'll be fully activated and good to go when you upgrade to the RTM. If you clean installed 10 TP maybe not. I've seen hints that you will be fine but nothing official. Likely because if they say it officially, everybody and their dog will sign up for the preview and do a clean install just to get Windows 10 for free.