Sony is bringing in a wave of new customers for their Xperia Bega Program. Xperia X Performance customers can now sign up inside the app to test new software goods headed their way.
Specifically, Sony is trying out Android 7.0 Nougat in the early going while they work up to a stable release. As it's a beta, the preview may not be up to your typical standard, though Sony usually doesn't let any big bugs through before they release new builds.
In any case, the whole point of trying the preview out is to give feedback so Sony can catch and fix any damning bugs before it makes its way out to the masses. Want to sign up? Download this app and follow its instructions and you should be squared away!