Still more big heavy hitters left. KH3, RE2, DMC5, DS, GoS, TloU2, etc. List goes on and on...so many more good games coming next year and beyond. PS5 is not happening next year.
The Last of Us, Beyond 2 Souls, Gran Turismo 6, Puppeteer, Rain, MLB 13, Ni No Kuni, God of War Ascension, Sly Cooper TiT, etc... Even Resogun.
With expected BC, a stacked PS4 year makes a lot of sense for a PS5 launch imo.
Given Sony's history of aiming for 6/4 launch schedules, it also makes sense from a prod perspective, if the components/ techs are ready at the right price.
So even though I wouldn't discount 2020 entirely, 2019 also makes all kinds of sense, specially regarding how coy they have been since E3 (where they were already low on future announcements tbh).