A list of purported Comet Lake CPUs has surfaced online and in addition to the U-series, we are getting to see a new G-series as well. The target segment of Comet Lake G is still unclear, but Intel is introducing a 6C/12T part in the U-series that is expected to succeed the current Whiskey Lake-U generation. The base clocks seem to be low but there is good turbo boost potential with Intel even indicating the attainable boosts based on core counts.
https://www.notebookcheck.net/List-of-Intel-Comet-Lake-G-and-U-series-SKUs-leak-with-supposedly-low-base-clocks-but-higher-turbo-boosts.418585.0.html