PlayStation 4 and Xbox One are about to go head-to-head at the biggest gaming event of the year — here's what to expect

Microsoft's annual E3 press briefing on all things Xbox is Sunday, June 10 at 4 p.m. EST / 1 p.m. PDT.

The primary way to watch the broadcast is on Mixer, Microsoft's live video platform, though "other streaming services" will also carry a stream. Microsoft didn't reveal which services those will be, but it's likely to include the usual platforms (YouTube, Twitch, and Facebook).

The E3 briefing is Microsoft's annual opportunity to announce major Xbox games, show off upcoming games, and — generally speaking — address its most loyal fans directly. It's the kind of event where Microsoft might reveal a major new "Halo" game (for example only, though we're certainly due for a follow-up to "Halo 5" at this point).

It's an event full of surprise reveals intended to wow viewers, and this year is no different, but we do have a few good ideas of what to expect.

Here's what we know about Microsoft's Xbox line-up: