If the T4 turns the T3's two weaknesses (drums and harmonizer) into strengths, then that would be a massive improvement.

I like the T3's drums, but they could be better. Korg and Ketron have more realistic sounding drums. I still like the T3's overall sounds more, I like their styles more, and I'm just hooked on Yamaha's operating system.

I expect improved drums and a better harmonizer in the T4 plus more new voices + additional styles. There will be a lot of small improvements as well. I'm sure that it will be better at loading and playing samples, for example.

Diki makes a great point however, that the latest arrangers sound realistic enough that any more realism isn't going to necessarily make us sound like better players.

On the other hand, great harmonies and in your face drums might be a good thing.

Beakybird