You can now self-publish on Xbox using the Creators Program:
I'm still looking into it, but so far I've been able to get my game running on the Xbox perfectly. I'm really impressed with how good it works now. When it was first possible to get a C2 game running on the Xbox One everything felt really sluggish, but with the new updates and such everything is working much better.
Bl4ckSh33p have you got it working? Maybe I can help.. I just followed Ashley's tutorial though.
My most common mistakes were not enabling internet after setting my Xbox One to devmode (when you do that, it erases the wifi configuration so you have to setup it again) and not enabling UWP when installing VS2015.
If your Xbox One IP on the devhome is something really weird (like 169.502.65.52 instead of the usual 192.168.0.X), it probably means you aren't connected to your network.
One thing I noticed is that running the game directly from VS2015 to your Xbox in debug mode will cause it to run slower than it's supposed to. To avoid this, just go to Project -> Store -> Create App Package and follow the instructions. Then, in the devhome on your Xbox, enable "Connect with your browser", then type the IP address of the Xbox directly into your browser (if you get a warning about it not being safe, click "advaced" and go to it anyway). Then on the page that opens, click the "add" button and pick your apppackage file. It will install directly on the Xbox. From there you can just run it like normal.
A couple things I couldn't figure out though - my game still shows up as an app instead of a game, and I have no idea how to set my save game file to show on the Xbox One in the right place. My game uses local storage and it seems this should be enough to make it show up there, but I have no idea how.