You are mistaken. Go look on the Colt website. They definitely still produce handguns.
The new Kimbers have what is called as the 'Series II' safety, or the Schwartz safety. Here, the grip safety disengages a firing pin block, so in order to fire the gun, you need to fully depress the grip safety, and also pull the trigger.
There have been instances where a gun can have the grip safety partially depressed enough to allow the trigger to be pulled, releasing the hammer, but not enough to disengage the firing pin block. Thats a non-reliable gun, IMHO!
Colts, back in the 80s have what is called the 'Series 80' safety, AFAIK, its also a firing pin block, but its disengaged by the trigger. If the trigger is depressed, it allowed the hammer to fall, as well as disengaging the firing pin block.
Colt started producing handguns again, since it it was sold to private investors. I hear that Colt is going back to pre-Series 80, or the traditional safety that John Moses Browning put into the 1911, which is just a grip safety, and no firing pin block.