Microsoft has sent out invites to the press for its Xbox E3 2013 media briefing which is scheduled to happen on June 10. Microsoft has already planned for another event before E3 media briefing on May 21st at their campus. As they announced, Xbox vNext details will be first revealed on May 21st and then the announcements will continue on June 10th.
On a related note, I’m more excited about my birthday this year than ever. It’s on June 10th, with Xbox E3 briefing and WWDC ! !