I just received my APM2, with the new hard case. I'm in the middle of connecting the OSD and I've noticed that the Tx and Rx labels for the Telemetry port are swapped around on the case.

The main board reads (from the edge) GND, +5V, Tx, Rx, but the case reads -, +, RX, TX.

Obviously the order on the board is correct, but I can see people making mistakes in the future after their cases have been screwed together for a while.