Intel's 10nm 'Cannon Lake' chips could land as soon as 2017-end, albeit in small volumes. The new chips, which will still be part of the 8th generation, are expected to go in full production by H1 2018 for a broad availability by H2 2018.
https://www.notebookcheck.net/The-first-Intel-10nm-chips-could-land-as-early-as-end-2017.261108.0.html