Same with my NUC6i3SYK
Wait for Intel support to confirm for certain but the NUC6iSYB is the code for the motherboard as it can be bought as a separate item. When it is sold as a kit it becomes either NUC6ixSYK for the low profile or NUC6ixSYK for the high profile. The x is either a 3 or a 5 depending on if you have the i3 or i5 cpu
I would therefore not expect there to be an issue. You should download the drivers and updates for the NUC6i5SYK which are here: Drivers & Software
Yes, that is correct; NUC6i5SYB refers to the motherboard model and NUC6i5SYK refers to the kit model.