This function adds a new layer type - a 256 step score.
This function adds the ability to change the block remotely, without being in remote mode.
This function stops the output of MIDI SysEx messages everytime you press a button in normal mode.
This function adds the ability to set different midi channels per layer (including off)
This page describes the behaviour of the TNR when certain buttons are held down on power up/boot.
This page describes the TNR hardware (as much as I know).
The Yamaha Tenori-on, designed in collaboration between the performance artist Toshio Iwai and Yamaha, is a wonderful piece of hardware.