Verge:
http://www.theverge.com/2013/5/17/4340490/xbox-dashboard-update-beta-ui-changes-for-next-gen
There's more in there about a dashboard update for 360 and stuff, don't want to quote the whole article.
Microsoft is holding a special event at its campus in Redmond on May 21st to unveil the next-generation Xbox. Sources have revealed to us that the event will include details of the new interactive TV features that the company is building into its next console. Microsoft is also expected to show off a smaller and denser Xbox console with newly designed controllers that are said to be "flattened" in appearance. Stay tuned to The Verge for our usual live blog coverage and a special edition Vergecast on May 21st.
http://www.theverge.com/2013/5/17/4340490/xbox-dashboard-update-beta-ui-changes-for-next-gen
There's more in there about a dashboard update for 360 and stuff, don't want to quote the whole article.