Average Socialite has posted that the John Wick 3 premiere will be in NYC on May 9, 2019. Their info for other premieres in the past has been reliable.That being said, I view this date as tentative. I’ll update if I see anything else.
We didn’t know the dates of the last two Wick NYC premieres until late afternoon the day of the event when folks in NYC started tweeting that the marquee was up and the red carpet out.
Note: Premieres are private and by invitation only. Sites that hawk access for big bucks are scams.