Thx to Winbeta.org as of the time of this posting I've only just installed, so no details as of yet. But we did notice somthing odd after the install was complete.

The Licencing and notice privacy agreement is POST install. Seems Microsoft doesn't want you to agree untill AFTER you install. More later.

Update: From Neowin.net New to this build is a POST privacy statement by Microsoft and a very cool option to setup your Privacy settings right away (cookie handling, sending Media player unique ID and stuff) These options can also be set in the tab via Options in the player. Or come see it for yourself @ Winbeta.org