A group called H4LT reportedly released the Microsoft Xbox One software development kit onto the Internet, to help "end 2014 with a bang." The leaked SDK could potentially open the door for developers to create their own apps and games for the Xbox One - but they will still be required to register with Microsoft beforehand.
H4LT noticed there is no "definite exploit" for the Xbox One, but hopes this will help coders to begin working on their own homebrew solutions.
"We leaked it to the community because if something is shared then... progress is achieved faster than alone.... The SDK will basically allow the community to reverse and open doors towards homebrew applications being present on the Xbox One."