Xbox Dev Mode was one of the exciting announcements from BUILD 2016. Every retail Xbox can now be used to test and develop Universal Windows Platform apps.
There has been praise and scorn over this feature announcement. While I will not try to defend it as perfect, I think there are a lot of hobbyists (like myself) who just appreciate the opportunity to make something and see it working on our consoles.
The documentation (Set up your UWP on Xbox development environment) was actually quite good to help me get the Dev Mode preview installed and get all the prerequisites installed. I summarize here, but you can skip to the next section if you’ve done this already or want to read the real docs.