The only other thing interesting externally besides the obvious 2 knob live control is the Voice Creator button added. So I assume that an on-board Voice Creator was introduced again, that was removed on the Tyros 5 and added as a PC program within the Tyros 5 YEM. I am sure the YEM Voice Creator version will remain as well. The Tyros 3&4 both had on-board and PC Voice Creator program version.

Marcus