According to this post at Tom's Hardware, NVIDIA might actually release a GTX 11 series after all.
According to the reports, the new series will still use Nvidia's Turing GPUs. The sites suggest that the RTX 2060 will use a TU106-200 GPU, while the GTX 1160 will have a TU116. The marketing also mentions "Turing Shaders," which would likely Ray Tracing exclusive to the RTX line.