The topic of fullscreen color management implementation in Wayland is back,
and it’s a kinda frustrating story. In a nutshell:

• people who are now working on this (Collabora developers) seem to have
  little experience with color management but they appear to be motivated to
  hack on the code;

• all the while people who have a crapload of experience with color
  management have had bad experience discussing this before, do not like the
  approach by the new team, and don’t seem excited to contribute to this new
  effort (Graeme’s spec proposal is still available).

So we might end up with an implementation that is not suitable for
professional work.