Bachus no way of telling what T6 or maybe a whole new TOTL series might be other then wait and see.......like I said before the future of Arranger KB's now that the sound & styles are so good is the new FEATURES added to upcoming models. All in One is the ticket!!
Actually, i think that i pretty much figured out how Yamaha works, when it comes to updating instruments, they pull features out of a huge database... They also take care of backward compatibillity... All the above features allready are part of that database..
Also there might be a brand new feature never seen before, like an orchestral feature, with true dynamic orchestral sounds, much like an advanced ensemble feature... Tough, i honestly dont think they will have the processing power for that in their new processors.. Tough Yamaha is a champion in making such a feature, which we know from the kontakt library, extremely playable..
I think there is one thing however which will decide if its a tyros 6 or another name... Amd thats, touchscreen, if it has a touchscreen and a new interface, then it will have a different name...
Maybe i am not right about all these upcomming features, after all its based on assumtions combined with what we know from Yamaha... But i could be closer then you might expect..