Hi,
Just wanted to update that Oculus has made their updated UE4 branch available to use:
https://developer.oculusvr.com/forums/viewtopic.php?f=60&t=12325
I can confirm that setting up and building their repository will give you a UE4 development environment that is updated with the DK2 sdk and projects are fully working with proper head tracking, smooth as butter. I’ve updated a few of the samples from the marketplace, shooter game is awesome on dk2, recommend trying this and updating your project to this version. It is a 4.3.1 build, so if you made your voyager project in 4.3.0 or lower you can update it to DK2 automatically by opening it with the built UE4 environment. Really looking forward to trying this out with DK2 support, can even build it for you if you want, takes 10 seconds or so to convert it into the version of the UE4 environment.