Looks like Support for SC5000/M’s is already being dropped.
The new Engine Prime (V1.5) update has support for 6000s but not 5000s.
In addition, v1.5 brings the following notable enhancements: … User Preference support for the Denon DJ SC6000/M, PRIME 2 and PRIME GO
The main thing is the firmware, as soon as there is a firmware update for the 6000s only, that is the end.