Will there be officially supported firmware for the CM5
I've tried the Firmware for CM4 and for the normal Raspberry 5, both do not work.
If it is not in firmware selector it does not exist.
Yes I've already come to that conclusion. That's why I asked if there will be a firmware available for cm5.
There are no plans to support any device at all. Device support happens -or doesn't- if owners of these devices do the development work and submit a pull request. In regards to the cm5 this shouldn't be too difficult (as the RPi5 is already supported and given that these SBC-lile devices are unbrickable), but it still needs someone (you?) to actually do it.