New TV With an Unknown Audio Out Jack?

You don’t have a toss link cable laying around to see if it fits, or the manual or model # of the new TV to see what type it is?

It looks like a Toslink. 

Did your TV come with a manual? Can you access one for your particular model?  That hole looks like an optical output but weird that it doesn’t have a cover.  If it is a digital output you usually need to select that as the output in the TV audio menu.

The tv doesn't get delivered until Saturday and I want to have the correct cable. I do have a standard Toslink cable with the same termination at both ends. The new tv optical output does not have the same input jack that the Zvox has (standard Toslink). The new tv owner's manual only mentions an optical audio output but not the type. There is a different type of male connector called a Mini-Toslink, very similar to a 1/8" head phone plug.  Mini-Toslink

Are you sure that's not a dummy plug in there? Did you try to pull that piece out?