Here’s something cheeky from a developer.
Bethesda has confirmed their E3 Press Conference date to be on Sunday, 11 June 2017 with this very tongue-in-cheek tweet.

This is due to Microsoft moving their briefing date a day earlier, which means that there will be two conferences on the first day of the E3 Presentation block. Not much is known about what games will Bethesda announced there, so we’ll see if there’s any news along the way.