It was discovered that the official Xbox Twitter account began sharing these E3 videos on June 6, with the code R 255 hidden in the background. Xbox even sent the user a 1-month code for Xbox Game Pass, saying "Here's a little something form us for your eagle eye!".
Phil ensured the crowd that the system would mainly be focused on the games, which is a call back to the mistakes that they have made with the reveal of Xbox One being mostly focused on TV aspects. The streams will go live slightly before then, and Microsoft doesn't typically do a pre-show of any kind.
Xbox Game Pass for PC lets you download and play the games offline for up to 30 days. Because of the message given when purchasing the Xbox Game Pass Subscription at this price, this does not seem to be a mistake on Microsoft's part, but it is an extremely good deal and will only last a limited time. We expect Microsoft to officially launch Xbox Game Pass Ultimate and Xbox Game Pass for PC later today during the Xbox press briefing, and you'll be able to watch it all on mixer.com/xbox at 1PM PT. Stay tuned to OnMSFT as we'll be covering the event live. Gears 5, Age of Empires, and possibly the rumored Fable reboot should all make an appearance as well, as should several triple-A third-party games.