Squeak,
It says 120something user sounds.... if you can assign them to tones with wave, then you could have the big soundfont of your choice at your disposal, many soundfonts weigh around 25 MB and are satisfactory, at least for me. Probably this flash ram will be shared among sequencer, user styles-tones-drums, smf's and so on.

Anyway, I am happy that things progress for Casio.