Apple Music via Airplay 2 lossy “bug”

Since Apple Music Airplay does not send lossless to Airplay 2 receivers, but AAC 256 instead, and Apple has said, some months/years ago, they would fix this; where can users go to see a schedule for when this will be repaired in an update?

Equally, when will Apple send 24/48 or 24/96 lossless to non Apple Airplay receivers capable of that resolution?

Also, will non Apple Airplay 2 receivers as the playback device with these updates become part of the Control Other… menu option for playback (similar to “Connect” like on other streaming services)? An example might be playing Apple Music from phone but the Airplay on an AVR takes over for playback. Cutting Airplay out.