rMbp 13 1680x1050 (non-retina) unavailable

Just installed and I am a bit frustrated that the 1680x1050 (non-retina) setting is unavailable.
The closest option is 1650x1050, leaving two black columns of unusable space of your screen.
I would not have bought this if known it before hand.

Fcore about ResolutionTab, v1.1