Microsoft has detailed the changes coming in the Xbox One May 2014 System Update: A new sound mixer for snapped apps, chat volume controls when using Kinect, and the option to help Microsoft improve speech recognition.

So nothing major. But as with last month's update, the May 2014 System Update is being tested publicly by people in the early access program before its wider rollout later in the month.

Here's what's coming in the May 2014 System Update for Xbox One:

Sound mixer for snapped apps. Thanks to feedback, Microsoft is working to provide users with more control over audio levels and background sound. So a new Sound mixer in Display & Sound settings lets you control the volume levels of two apps when you're using Snap. That way you can decide which app will be louder.

Volume controls when using Kinect with chat. That Display & Sound settings interface is also picking up a new Chat mixer for controlling volume levels when you're using Kinect for chat.

Opt-in program for helping to improve Kinect voice recognition. Users will be able to opt into a new program that shares your Kinect voice recognition data with Microsoft so that they can improve the algorithms with more data. "The more voice samples we have to input into our algorithms, the better and more responsive Xbox One can be to our fans," Microsoft notes. "If you want to help us in our efforts to make voice and speech improvements for Kinect even better." You can opt-in through Settings, Privacy & Online Safety, Customizing Privacy: Just enable "Share Voice Data to Allow."

I was traveling over the weekend, so I've not look at this update yet, but it looks pretty straightforward.