The re-write of KHPro 4.103 to KPro 1.0 went badly 2 years ago. We have been back on the KPro development since April. I should have the first update next week to look at.
Duets is one of the major upgrades. It will allow 3 colors Singer1, Singer2, Both.
Still no ETA for release....
but 2005 is likely.