If they do, it might rekindle my interest in the .40. I had one of the first 23's to come out and carried it for years. It was a great gun, but definitely caused some pain to the hand after a couple of hundred rounds.
I am getting ready to move to a rural setting and always liked the .40 for that role. It reminds me of the .38/40 and in a lot of ways the Glock has become a modern version of the Peacemaker. Obviously not in terms of ascetics, but in terms of reasonable power in a trouble free and simple design.
Fingers crossed for a .40 caliber upgrade on the Gen 5's.