For the time being, they do not have any changes, unlike the villagers, they continue to maintain their original function: wandering. Right-clicking on them will simply open the trade menu. They will also disappear after a period of time as they always do.
NOTE: The skin files have been updated so you must do it too, otherwise every time a wandering trader appears in the world you'll have to wait until the skin is generated to be able to see them.
To do this you have 2 options, you can either delete the skins folder and restart the server to download them again automatically OR, you must manually paste the new skins to your current files. If you choose the second option, copy and paste the new entries at the end of your female.yml and male.yml files.
If you have any suggestions on what changes to make to the wandering trader or how to improve them, you can leave your suggestion on the discord server.
Fixed an issue where new nametags were visible when villagers were invisible.
Fixed an issue where invisible villagers were visible when they should't be (mostly when spawning).
The way in which the skin preview is done has been changed, now an NPC will appear in front of the player rotating showing the selected skin for a short time.