Funny to see this through zdnet instead through the hub but it looks like if you have been using the insider preview, and active win 10 when they do the final build you get a fully activated copy of win 10. and if you want an iso if you activate the preview you get a key linked to your ms account. I will mention that some games that use IE like some of the ubisoft uplay games simply refuse to launch. But that means any malicious logic that did the same thing will also refuse to launch. I take it as far trade off no matter how much I wanted to play the ghost recon game.
http://www.zdnet.com/article/window...=nl.e589&s_cid=e589&ttag=e589&ftag=TREc64629f
http://www.zdnet.com/article/window...=nl.e589&s_cid=e589&ttag=e589&ftag=TREc64629f