Other than more cores, the leak also points to predictable things like higher clockspeeds and unfortunately also a higher TDP. Comet Lake is essentially yet another improvement of the 14nm Skylake architecture, so there isn't much that Intel can do to make this refresh a Ryzen-killer.
ComputerBase also heard Comet Lake may require the LGA1159 socket and a 400-series motherboard. Guess we'll find out later this year how much of this pans out to be accurate.
The leaked slide can be viewed below: