NVIDIA could look to introducing a refreshed RTX lineup as a pre-emptive measure to take on the upcoming AMD Navi lineup, according to information by RedGamingTech. The rumors points to a possible refresh of current RTX cards with higher memory speeds. Also being speculated is a possibility of higher clocks, use of Samsung's 16 Gb GDDR6 DRAM, and reduction in prices.
https://www.notebookcheck.net/NVIDIA-senses-Navi-s-imminent-threat-rumored-to-be-working-on-RTX-refreshes-with-faster-memory.420638.0.html