I have a feeling those voices were edited using the internal patches. All those demos screamed of KORG sound. I too thought that sax was interesting. Strings were great.., but I'm not surprised there as Korg (especially in the WS department) has always been held high in string patches.

The OS release is going to be interesting for sure. Korg is great in that they leave so much room for additional features via OS upgrades that require no hardware updates in order to use them (and they're FREE). Plus being able to create these types of voices yourself is very cool.