Gamescom doesn't even officially start until tomorrow, but Microsoft is in Cologne early to show off everything Xbox and Windows 10. Chances are we'll see a lot of footage from upcoming exclusives like Quantum Break, and perhaps some new software tricks for the Xbox One like the oft-rumored DVR function. Other than that, your guess is as good as ours -- will we get pricing and a release date for HoloLens? What t-shirt will Phil Spencer wear under his lovely blazer? Will someone talk way too long about a car slowly descending from the ceiling? Tune in at 4PM CEST (10AM ET / 7AM PT) to find out.