Microsoft has sent out invites that call the member of the press to see "A New Generation Revealed". This invite has pretty much confirmed that we'll see the next-generation Xbox, codename Durango, during even scheduled for May 21st.
The invite does not reveal that much other than it will actually be about Xbox since Don Mattrick and the Xbox team are behind it. The even will take place at Xbox campus and despite being scheduled few weeks before E3 Expo scheduled to kick off on June 11th in Los Angeles, Xbox Live director Larry Hryb promised that Microsoft will keep talking about it at the E3 show as well.
The event will be streamed live via Microsoft's Xbox Live and Spike TV and we will surely keep an eye on it.
Source:
Engadget.com.