Ryzen 1800X Zen 1 March 2, 2017 0 yearsIm arguing Q2 2024 at the latest (on 4nm). He is arguing late Q4 2024 at the earliest (on 3nm i believe). AMD'st past cadence has been 12-18 months. Zen4 took 23 months because of the massive number of changes. Zen5 should return to normal 18 months meaning we are about 9 months away from Zen5 release.
AM6 wont happen before DDR6. Meaning possibly Zen7.
Ryzen 3900X Zen 2 July 7, 2019 ~2.33 years
Ryzen 5950X Zen 3 November 5, 2020 ~1.33 years
Ryzen 7950X Zen 4 September 27 2022 ~1.85 years
Ryzen 9950X Zen 5 July to November 2024 guesstimate
AMD can release Zen 5 whenever they like but historically we are looking at just shy of 2 years average between major releases.