Micorsoft's E3 briefing "Xbox: Entertainment Evolved" will be broadcast on Xbox LIVE.
The 90-minute E3 briefing, which will take place on Monday, June 4th at 12:30pm ET will be shown life on Xbox LIVE, along with Spike TV.
Unfortunately, Major Nelson didn't even hint as to what the company would be showing off. No doubt we'll see some Halo 4 footage, but aside from that your guess is as good as ours. Microsoft has already confirmed they will not be showing off any new Xbox console hardware so don't hope for any Xbox 720/Durango announcements. Maybe they'll show off some variant of the current Xbox 360? We'll see.
In the meantime, let's hear what you want to see from Microsoft at E3 next month.