Wish I could shed some light. All I know is that the new sounds are great and the styles are smoother and fuller. The polyphony problem in a couple of the style endings seems to have been addressed.
To be honest, I have had some time off work and have been mostly playing golf instead of music.
I know nothing about Ketron's timetable or plans for release of the new material.
I assume they are still adding stuff, but I don't know that for certain.
DonM