I've got an old 3.8" touchscreen that's still working, but is WAAY outdated and doesn't do much useful for me.  I'm looking at upgrading to a newer model, but not sure what the minimum update I can do is.  Is there a list of touchscreen models somewhere (only need in-wall models) that will support OS 2.9?

 

Aha, thank you.  I wasn't sure if the list had changed since then.

Nope, no changes in what hardware is supported as such.