https://arstechnica.com/gadgets/2019/06/amd-launches-navi-as-the-449-radeon-rx-5700-xt/
For a more tech-y read, plus a bit of Ryzen:
https://www.gamersnexus.net/news-pc/3481-amd-navi-rx-5700-xt-specs-overclocking-architecture
Should be interesting to see how it prices here once the AIB partners announce their versions