It is tough to answer because we will have the same arguments as always, some saying the sound is hugely improved, and some saying they can hear no difference...

The sound has improved, exacly by what means is difficult to quantify. There are now 8 live drum kits with many stereo samples, and these are improved through the sound system. There are 32 technics kits and 9 gm kits. The styles have new and reworked with more 4 and 5 accomps and minor intros and endings and using more of the new voices.

I always say listen yourself and see if you rate it. There are a couple of threads where Bill Norrie and Teemark have described their impressions in detail.