HP seems to have accidentally revealed all the specs for Intel's Whiskey Lake-U family of mobile CPUs, as the information was taken down soon after. Nevertheless, it is now known that there will be three models - the Core i3-8145U, Core i5-8265U and Core i7-8565U, HP also revealing core count, frequencies and cache memory configurations.
https://www.notebookcheck.net/HP-reveals-Whiskey-Lake-U-CPU-specs.321280.0.html