Good for Walther and I believe some of the changes will make the PDP more competitive with other manufacturer offerings specially with new grip texture and optics ready but I am happy with my 9MM PPQ M1 and am skeptical that the trigger is better on the PDP. Take up is shorter and trigger is lighter on PDP but to me that does not necessarily equate to a "better" trigger. I find it interesting that discussion is Walther may be looking to sell more to agencies but not sure how many would want a pistol with a 4 LB trigger. PPQ was advertised with a 5.5 LB trigger and more than a few think the PPQ already is on the light side for a carry self defense pistol. Though I really like my PPQ, I don't carry it. My CCW choice for a double stack pistol is my Gen 2 Glock 19 and I shoot it just as well as my PPQ, it is more compact, and I personally find the Glock 19 trigger, at least on my Gen 2, more appropriate for a carry pistol and decent enough for all around use. I wonder if Walther is going to offer more springs so that the PDP trigger can be heavier for those that want such.
I read on the Walther forum where a member contacted Walther and asked if the PDP 4 inch slide would work on the 4 inch poly frame PPQ and was told that it would. Also was told slide cost would probably be around $275 though not specific if that is only the slide or slide/barrel/RSA. That could be a good option for those that want to mount an optic on their PPQ. I believe the PPQ barrel is the same as the barrel being used in the 4 inch PDP. At this point I don't have an optic on any of my pistols but am curious about such and probably would start out doing such on my Browning Buckmark with the Outerimpact mount first as it would be more economical to do so and also to shoot with ammo costs these days.
Hopefully LGS will get a PDP at their rental range as I would be interested in trying it out to see how it compare to my PPQ.