AMD hasn't given a firm release date, only "middle of 2019". Most widely circulated rumor is 7/7/19 on store shelves either alongside or a month before Navi, with a launch at Computex on May 28th, but a lot of it will depend on TSMC's 7nm fab ability. The latest leak comes from Bizgram, an Asian website listing prices in Singaporean dollars (1 USD = 1.35 SGD). Take it with a grain of salt of course. Granted Zen 2 is supposed to bring a large increase in performance, parity or even greater performance than Intel while ramping up the core counts drastically, the actual prices, as well as actual availability given the number of 7nm customers TSMC has to fab for as well as the fact AMD has two 7nm products, Zen 2 and Navi, are still to be determined.
https://www.forbes.com/sites/antonyleather/2019/03/04/amd-ryzen-3000-series-specs-and-price-leak-again-16-core-zen-2-intel-beater-for-560/
