The future "Ryzen 3000" lineup will adopt the 7nm node and this could result in big gains. German tech site PC Games Hardware reports that in comparision with the current 14nm Ryzen chips, the 7nm parts could have a chip area that's more than halved in size.
If a current Ryzen 1000 series part were to be made on the 7nm node, it would have a die area of just 80-100mm², versus today's 213mm². That's a much bigger gain than expected, in large part due to significant progress in the wiring. Additionally, GlobalFoundries expects a performance increase of 40 percent, which could make clockspeeds in the 5.0GHz a possibility.
The "Ryzen 3000" series is expected in 2019.