Figured I'd start a general thread here for it. Guessing not a lot of people have them yet, but some likely will by the end of the year.
The DS4 controller: It rocks. SOOOO much better than the DS3. I like what they've done with it and actually was caught off guard by the speaker the first time sound came out of it. Kind of interesting how the games I've been playing so far have incorporated it, though still semi-gimmicky. Killzone uses it for reading "audiologs" that you find throughout the game - the problem is, some are long and you've already moved on to doing something and it is still playing and actually can get distracting when you're trying to hear what else is going on. Flower uses it for the sound of the wind sort of like a "presence" speaker while the music is playing on the rest of the speakers, which is kind of cool. Rezogun uses it for game notifications (power up!), which I liked, but even though you can control the volume via the game, it is still pretty loud and the volume didn't adjust with the rest of the system. The only thing I don't like about the DS4 is the LED light. That light is intended to be used with the camera sort of like Move, but you can't turn it off or down so far. That means, while watching a movie or playing a dark game, it stays lit up and it is pretty bright. Killzone used it to nice effect though - the color of the LED indicates your health and it changes as you take damage, instead of displaying it on the screen. The big empty spot in the center is what I thought it was going to be, a touch pad. So far Killzone is the only game I have that's using it; you swipe to change options. I do also like that they now give you the option to be able to keep the USB ports powered while the unit is in stand-by so you can charge controllers.
I kind of doubted the reviews, but so far, the best game is
Resogun! It is a sort of side scrolling shooter, except instead of just scrolling, you actually fly in a fixed cylindrical path that is the level. Pretty cool take on the genre, and I have to say, very fun. Best part - free for Prime members
http://www.ign.com/articles/2013/11/13/resogun-review
Killzone Shadow Fall - looks great, has excellent sound, and though some new mechanics and tweaks were added, it still feels like Killzone. I don't mean that in a good way either. It is better than the last entry, but still hasn't impressed me with anything besides incredible visuals. Like most multiplayer intended games, the solo campaign feels like it was an afterthought, with a thin story and a standard feel. IGN said it was the only one of the launch titles that was actually developed from scratch for the PS4 though, unlike all of the others that are basically on their former PS3 engines (and it shows).