So, is the 5 gonna be a drop in replacement for the 4

[white-round-square]

CM5 is here. Just released!

It looks like the kernel is the main thing as Home Assistant have confirmed the CM5 works as a CM4 replacement on the Home Assistant Yellow with just adding CM5 support in HAOS 14.0 So I think the main hurdle for the CM5 will be cooling within the uConsole case