AMD's RX 500 GPU line is a Polaris rebrand launching April 2017
At AMD's Capsaicin & Cream event at the Game Developers Conference 2017, the company unveiled that their next-generation line of graphics cards will officially be called Radeon RX Vega. Presumably each Vega model will come with some additional numbers and letters to denote how powerful it is.
This announcement left many confused as to the fate of the Radeon RX 500 series, which has been rumored for several months now.
According to the folks at VideoCardz, the Radeon RX 500 series still exists, it's just a rebrand of existing Polaris-based RX 400 cards with slightly improved performance. According to heise.de the cards will be available in April 2017.
Techspot : 'For more information on Vega, you'll have to wait until closer to its launch. At this stage we expect AMD to properly introduce Vega around Computex in the middle of the year, which would just scrape inside AMD's stated first half of 2017 launch window.'
http://www.techspot.com/news/68361-amd-radeon-rx-500-gpus-reportedly-polaris-rebrand.html
https://videocardz.com/66359/amd-radeon-rx-500-series-to-launch-in-april
http://www.techspot.com/news/68338-amd-names-next-gen-graphics-cards-radeon-rx.html
http://www.guru3d.com/news-story/amd-rx-500-series-launch-april-4th-with-three-rebrands.html