Traded in my XB1 controller, stereo headset adapter, chat headset, and two 360 controllers I don't use anymore (side note: Gamestop will take
anything, the controllers were clean but I had worn those joystick caps smooth ages ago

) and picked this up today, thought anyone interested might want to hear about what they changed.
I guess the black one isn't out yet, so I got this one instead:

at least it isn't bright orange or anything
First off, they added a 3.5mm headset jack, and that damned thing is LOUD. I used to crank the stereo adapter all the way up, but at half volume this new controller is equivalent to the max on the adapter. It sounds better, too, fuller I guess. You go into device settings to adjust volume, voice monitor, etc. Hopefully they change that to make it more easily accessible. Drawbacks are no volume/mute buttons at your fingertips.
They tweaked the bumper buttons a bit, they feel clickier and more responsive no matter where you press them. I never had a problem with the old bumpers but I still noticed the difference.
Might just be because it's brand new, but the D pad feels tighter. I dunno if they did anything there.
That's about it. Minor revision, but I'm happier with the sound now than I was with the adapter.
Oh, evidently they removed the infrared from the new controllers, so if you use them in conjunction with Kinect be aware of that. I don't have a Kinect so I don't really give a shit.