When will Cross 4 MIDI mapping commands be published?

I have still Cross DJ 3 with video, but I don't want to invest in Cross 4 if the MIDI mapping commands are not being supported.
That is, Cross 4 now has been released for long enough that if there are any mapping command changes or additions/deletions, I think they should have been published by now.
Is there a timeline for this to happen?
That is, Cross 4 now has been released for long enough that if there are any mapping command changes or additions/deletions, I think they should have been published by now.
Is there a timeline for this to happen?