This week is the week of Gamescom, specifically three days.
Starting on the 25th of August and running until the 27th, the event will include Sega and Xbox, and will start will an opening night presentation from Summer Games Fest founder Geoff Keighley.
You can watch the opening event at:
18:30 for Great Britain,
19: 30 for Central Europe
and 10:30 PT/ 1:30 ET for the U.S.A.