So, there's been a bunch of dodgy E3 leaks to date. It's really not that hard to put a bunch of games on a bit of paper. However, this one leak which appeared on 4chan and has been confirmed by sources such as Kotaku as looking legit, definitely seems real. There's nothing too crazy on this design document (which was apparently posted by someone working on the E3 displays). In the document, there's Dragon Ball FighterZ, Fortnite, Monster Hunter Generations Ultimate, FIFA 19, Killer Queen Black, Starlink, Paladins, Overcooked 2 and Mario Tennis Aces. Now before you freak out, if this were real, it's clearly only related to what's playable on the show floor, so this wouldn't be all of the announcements that Nintendo would be making at E3.