I am excited to see how much clockspeed Ice Lake can give for 4-core and 6-core laptop CPUs due to power efficiency improvements with Intel's true 10nm.
Maybe 3GHZ base 6-core or better.
In terms of IPC improvement, which, Intel really hasn't had any (read: 0%) Since Haswell/Broadwell ->Skylake , i am doubtful it will be greater than 8% more than Skylake.
Whereas, ARM is still improving IPC at every generation (A76). When will they hit the IPC roadblock? AMD on track for IPC improvements with Ryzen2.. Intel needs a radical change.