If you need another “proof” that the next MacBook Pro will indeed feature an OLED touch bar in place of the function key row, feel free to comb through system resources in the macOS Sierra 10.12.1 software update which released yesterday.
As first discovered by MacRumors reader Gabriel Lorin, the System Preferences assets for the Mac's virtual keyboard now come with refreshed image assets depicting an updated keyboard layout which no longer shows the standard row of function keys.