The Ann Arbor home occupation regulations ordinance revision came before planning commission again on May 18; for video of the discussion see:
https://youtu.be/3tRQGp5D_h4?t=796
See legistar for new ordinance language and staff report describing the changes.
The main change since the previous proposal is to remove the lists of specific prohibited or allowed occupations. In particular, the prohibitions of "recording studios" and "Machine shop/metal working", are gone. Those prohibitions were the targets of lots of complaints in public commentary.
Other changes were also in the direction of liberalizing the rules somewhat; see the staff report linked from legistar, above.
There was no more public comment at this meeting.
I believe the next step will be two readings at city council, but I don't see it on their schedule yet.