Microsoft is trying to make it easier for indie developers to create games for the Xbox One, and today it announced that it will be giving out Unity to all ID@Xbox developers. ID@Xbox is Microsoft's program that helps indie developers get access to tools to make it easy to create games for the Xbox One.
An Xbox One add-on for Unity will be available in 2014, and members of ID@Xbox will get this tool for free, as well as pro licenses for publishing on the Xbox One. This means that it will be much less expensive for an indie studio to get its games out on the console, which hopefully leads to more games being released for the Xbox One.
Announcing Unity for ID@Xbox Developers [Microsoft]