Kaby Lake in itself is already a disappointment. Intel must have lots of problems with 10nm production if they're willing to slip a full product generation.
I wouldn't call it a disappointment. It will add native USB 3.1 (Type-C) support which is major thing for me, considering that USB Type-C is projected to become the most popular socket in the history of humanity. Also: support of Intel Optane (https://en.wikipedia.org/wiki/3D_XPoint), Thunderbolt 3, HEVC, etc (https://en.wikipedia.org/wiki/Kaby_Lake).
I thought type C was just a connector. How is this supported or (not supported) by the SoC? There are USB 2.0 devices with a type C connector. This is more confusing than it should be for me...
Skylake supports all these, but needs a a seperated chip on the motherboard. With Kaby Lake it'll be built in to the chip. That should hopefully mean these connections aren't just restricted to high end laptops.