Based on the information leaked in the latest updated of AIDA64, the upcoming GPU appears to be based on the TU102, so it is certainly an enthusiast-grade model. It may end up as either the RTX 2080 Ti Super, the Titan RTX Black or a new Quadro RTX professional GPU.
https://www.notebookcheck.net/Nvidia-may-soon-launch-a-new-RTX-GPU.430535.0.html