Intel's Boyd Phelps has confirmed that 8-core Tiger Lake processors with up to 24 MB of low-level cache are in the offing soon. Rumors indicate that Tiger Lake-H will be available in 35 W and 45 W variants with four cores and up to eight cores, respectively. It will be interesting to see how the competition between Tiger Lake and AMD's upcoming Cezanne mobile APUs pans out.
https://www.notebookcheck.net/Intel-Tiger-Lake-H-with-up-to-eight-cores-coming-soon-rumored-to-sport-Xe-LP-with-32-EUs-but-threat-from-AMD-Cezanne-looms-on-the-horizon.493982.0.html