DS4 gets an official Sony dongle for use on PC. Their wording sounds like it's only for psn services but I'm sure it'll be generic. Hopefully better than the shitshow that is the X1 controllers Windows drivers.
Theres quite a few games Ive ran into problems with DSTool. If they do it right and we no longer need to run a bit shonky 3rd party software thats worth it if its £15ish, extra worth it if it supports using it as an audio device. I dont really have faith that it will be done well because like I said, the X1 controller is kind of shocking in its PC use, 360 ones are way way better.