This preview will let app developers - or other applicable parties that sign up through Google's Android Beta program - check out Android 7.1 before it goes public, giving them a chance to optimize their apps for the updated software.
In addition to the minute refinements that typically come with a new Android platform, previewers can get their hands on Daydream VR support on their phones - provided that they're Daydream-ready, of course.
More Nougat-y filling
For those without a standing by, Android 7.1 also lets developers play with app shortcuts, an API feature that plots direct paths to frequently used parts of applications without users having to open a bunch of menus manually.
For those who prefer to wait for the public release, the Android update is expected to launch in "early December."