Xbox at E3 2018: Watch live for more from Microsoft on Halo, Gears and more
https://www.cnet.com/news/xbox-at-e3-2018-watch-live-for-more-details-from-microsoft-on-halo-gears-and-more/
We'll have the livestream right here, so you can follow along in real time. (And you can find the full schedule of press events and E3 show floor hours here.)
Alternately, you can watch on the official YouTube channel or Twitch channel.