According to a new leak, Intel has a replacement for the NUC 10 Performance mini-PCs in the works. It apparently goes under the heretofore-unknown code-name Panther Canyon, and will be powered by Tiger Lake-U processors with Xe graphics. This new rumor also covers the "NUC 11 Extreme" line, also known as Phantom Canyon.
https://www.notebookcheck.net/Panther-Canyon-is-the-Intel-NUC-10-Performance-series-successor-new-leak.450928.0.html