Yet there is nothing on my box that refers to a "Plus" feature. What does this mean, without having to open the box to find out?
For some reason, I can't find my box right now to be 100% sure, but I'm 98.7% sure that this is the version that I have, especially since my stats also show me as owning Catan Dice Game Plus. The rules for that game are also included, and the scoresheets are double-sided, with the image for the "standard" game on one side, and the "Plus" game on the other.
I'll come back and make any necessary changes or additions when I find my box.