ASUS is releasing UEFI updates for 87 LGA 1151 motherboard models which will add support for Intel's Kaby Lake processors. They have a table listing all models and UEFI versions which you should update to in order to get full support for the new processors. If you are wondering about picking up one of these motherboards during the inital release of Kaby Lake, ASUS has tested and verified that their USB BIOS flashback tool will enable you to update your UEFI even if it does not want to immediately boot with a Kaby Lake processor installed.
They have spent the last few months with samples of Kaby Lake chips and have tested them for compatibility as well as enhancing the features the motherboard can take advantage of to ensure you get the most out of your shiny new CPU. Regardless if you use a Z170, H110 or even a C232 chipset your motherboard will be compatible. Get out your USB drives and download the new versions to flash to or use EZ Flash 3's Internet option to get the latest version right from ASUS.