There's no way they'll top 2015. The Last Guardian followed by Final Fantasy VII Remake and then topped off with Shenmue III is too insane.
For me, to beat that they'd need to announce that FF VII, Shenmue III, KH III, and The Last of Us II are coming before the end of the year, as well as DQ XI coming to the west by then. Considering none of that will happen, I don't expect 'the best E3 conference ever'.








