Originally Posted by
dcadwell
If memory serves there are cabin retrofits taking place and certain seats, while marked as Main Cabin on the seat map, are indeed C+ and come with full C+ benefits. Until all retrofits are complete, the "old" seat maps will remain.
I'm sure Widgets will correct me, though.

They did the same thing with the MD-88s (and 90s?) when they expanded C+ to include rows 13-15 a few years ago.