AMD has finally made the next gen Vega GPUs official with the unveiling of 3 Radeon RX Vega GPUs featuring enhanced features at seemingly competitive price points, with broad availability starting August 14.
https://www.notebookcheck.net/AMD-Radeon-RX-Vega-now-official-499-for-the-Vega-64-and-399-for-the-Vega-56.239666.0.html