When will the "Key Map Manager" API be available for TC75?

One of our customers wants to have the volume keys on the right side of the TC75 acting as additional scan trigger buttons.

Currently we do this key mapping manually while staging the devices. But this is tedious work.

So we would rather be able to remap the keys automatically from within our application.

But this is not possible because Key Map Manager API is not (yet) working on TC75, and also not on TC55.