I watched it, and IMO it was pretty boring.
There were a few highlights thrown in there. (OG Xbox Compatibility, new Life is Strange game, Bioware's Anthem, a few of the indies, Sea of Thieves, etc.) but otherwise nothing has really blown me away personally . But then again I'm really looking forward to what Sony and Nintendo have to show more then anything since they have shown some crazy and neat stuff in past E3's, but then again E3 is just getting started, so who knows what they'll show off?
Though really, I'm not a Xbox guy. So my opinion is practically shit. XD