The alleged processor was spotted on the sea of CPUs in the Sisoftware datebase, appearing as an 8-core and 16-thread beast, that seems to be designed specifically to compete with Ryzen 2nd generation core-count advantage. Moreover, according to the documentation, it looks like the processor is fine-tuned to run at a 2.6Ghz base clock, though the boost clocks haven’t been mentioned yet.
This would be a great surprise.
When Intel stepped up from Kaby Lake to Coffee Lake, it claimed that all processors would require a new motherboard/chipset. However, in a very short time, some clever modders managed to get Coffee Lake processors to work with older motherboards. We highly doubt that Intel would double back to an older chipset, but it would lower a massive barrier of entry for Kaby Lake users to upgrade their processors.