The Intel Comet Lake Core i3-10100 has surfaced on the Sisoftware database confirming that it is indeed a 4C/8T part as speculated. Not much information is there about the processor itself apart from the fact that it has a base speed of 3.6 GHz and a 6 MB L3 cache. Intel Comet Lake CPUs are part of the 10th generation and will continue to be fabbed on the 14nm process.
https://www.notebookcheck.net/Intel-Comet-Lake-Core-i3-10100-sports-a-4-core-8-thread-configuration-pegged-to-replace-the-Core-i7-7700K-at-much-lower-prices.438932.0.html