This new roadmap, which hasn't been leaked yet, allegedly also shows that Comet Lake-S will adopt a dual-ring bug interconnect, which is similar to what's used by the HEDT processors.
Now a single ring bus can definitely handle 10 cores, even more since it allows it but this would be an interesting change if Intel does go with the dual ring design considering their core to core latency has been on point for a while on the mainstream side compared to the competitors who rely more aggressively on interconnects due to cores allocated to dual dies, hence slightly affecting the latency speeds.With Comet Lake-S still using the 14nm node, it will be interesting to see what sort of power draw the 10-core versions have. There are no details about a possible launch date.