It's not exactly a misprint either because the nomenclature appears several places. Technically it's impossible I would think to include both analog and optical with a single connection.
Hi Mathew,
I took a look at the device at the local Apple Store.
How Apple managed to pull this off is interesting.
It is indeed both analog and digital in a single port (but not the same connection).
The circumference of the inside of the port houses the electrical contacts for the analog output. Much deeper inside, dead center of the port (hole), lies the optical (digital) output.
The only problem I forsee is someone spraying contact cleaner in the port, and ruining the optical digital out lens.
Hope this helps.
-Lost81