You’re right on the money @Tinkerer. The ones I received today are fw version 1.0, which do not support Matter 1.3.
TP-Link are apparently working on an update, though no ETA has been given:
Although if they do release an update, can that be pushed from a Matter controller (ie HA)? Or are we going to have to download the Tapo mobile app, create a TP-Link account, etc etc and do them all one by one?