The PTR updated earlier and now Classic (Era/Anniversary) has a new character selection screen. Cata Classic is notably absent from the options.

I noticed that as well. So much for #nochanges haha.

Kind of awkward design choice, since some characters get their head hidden by the banner.

They should have kept the option to the alread existing logo to the left—click it and get a list that goes down. Rather than having a whole banner across the top that is way more intrusive.