https://www.polygon.com/2017/5/4/15542356/e3-2017-coliseum-panels-geoff-keighleyEvery year, the main conferences that we watch on the stream happen on the two/three days before the actual E3 floor show opens. The only company to have their "presentation" at that point is Nintendo, with their Direct video. For most people, this is when you go back to your normal life as all the big announcements have been made, and any remaining trailers will trickle through.
It's different this year.
For the 2 or 3 days after the other presentations have finished, this year will feature E3 Coliseum, hosted by Geoff Keighley (the Dorito Pope), a collection of presentations and panels with studios like Activision, Bethesda, Gearbox, Sony, Square Enix, Ubisoft, Warner Bros and Xbox. It's designed to be a more serious look behind the announcements, as E3 has stated there will also be panels from “celebrated talent from the film, TV, music and other entertainment industries who will speak about the cultural significance of gaming and how this incredible medium has influenced their work.”
I will be making sure the CyTube runs for the full length of Coliseum, although I consider the Nintendo Direct a priority if that occurs at the same time. Similarly, if the PC Gaming Show intersects one of the actual good presentations, we'll be swapping over as I don't have the time and patience for that.
EDIT: Also finally updated the question in the OP.