Quick Riposte from the Discord channel for Switch games, and what I expect to see for each:
Games we care about with a known future street date:
Assassin's Creed 3 "remastered" - May 21 - N/A, will be out
Mario Maker 2 - June 28 - Invitational confirmed, full demo live on show floor, treehouse spotlight, DLC announced
Dragon Quest Builders 2 - July 12 - Trailer during Squeenix's Direct, unmentioned by Nintendo unless it gets played at Treehouse. Demo live on show floor.
Fire Emblem: Three Houses - July 26 - Full trailer. Demo live on show floor.
Games we care about with a known release season:
Daemon X Machina - Summer - Release date, new trailer, demo live on floor
Marvel Ultimate Alliance - Summer - Release date
Bloodstained: Ritual of the Night - Summer - Release Date, demo live on show floor
Okinaki - Summer - Release date, trailer
Grid Autosports - Summer - Release date, short trailer
Dragon Quest XI S - Fall - Release Date, demo at Squeenix booth on show floor
Dead by Daylight - Fall - unmentioned
Pokemon Sword & Shield - Late/Winter - Nintendo Direct Focus Game, release date finalized, generic rodent and bird announced, route 1 demo on show floor
Games we care about with unknown status and ominous "2019" release dates (or just nothing):
The Legend of Zelda: Link's Awakening (2019) - Live demo on show floor, release date
Rune Factory 4 Special - Release date
Catan Universe - unmentioned
Munchkin - unmentioned
Killer Queen Black - unmentioned
SSBU DLC Packs 2-3 at least - DLC fighter 2 revealed in full AND/OR DLC3 teased.
Bayonetta 3 - unmentioned
Luigi's Mansion 3 - short trailer with release window narrowed
[Animal Crossing Switch] - Nintendo Direct Focus Game, release date and title revealed
[Town (working title)] - Formal reveal and release date, early fall.
[Unnamed SMT game?] - Maybe a trailer during Microsoft's presentation?
A metric ton of ports - M O A R P O R T S
Games we know are in development but probably not 2019 at this point?
Rune Factory 5 - Ominous 2020 release window
Metroid Prime 4 - "I swear we didn't forget about this, have a 2020 and get out of our hair"
Persona 5 Scramble - lol 2021.
And in brief, what I expect from each of the press conferences, in order:
Electronic Arts: Will do exactly what they did last year. Which is to say, not officially attend E3 but hold streams the day before the conferences start, and talk about FIFA, a Star Wars game, and get booed off the stage about Apex because Epic Store.
Microsoft: Will be the first to formally throw the curtain off their new console, the XBOX Too. Also their typical 30-50 game announcements. Microsoft.
Devolver Digital: Will put on the same shitshow they have the past two years and it will be hilarious.
Bethesda: Will be showing no games from their core series and instead smashing together a mishmosh of live performances with The Todd Comedy Show.
Ubisoft: Will have a dumb dance number, and be the most content-heavy presentation of the bunch. BGE2 will be the star of the show.
Square Enix: Will actually have a presentation that matters. Will show off at least one Switch-releasing game.
Nintendo: See the list above
Sony: rip sony (Not at E3 this year)