I've not seen anyone yet with the beta versions yet as it's reported to have been released initially in Germany @DionDavies however there is lots of information on various tech blogs on the cat emojis as Easter eggs.
These typically change as the new update changes.
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I have no affiliation with Samsung.