Android O is now officially going by the name of Android Oreo. The operating system is available today via Google's Android Open Source Project. OTA rollout is expected to arrive first to Pixel and Nexus devices, with builds currently in carrier testing. The Verge reports: The use of an existing brand makes sense for Google here -- there aren't a ton of good "O" dessert foods out there, and Oreos are pretty much as universally beloved as a cookie can be. There's also precedent for the partnership, as Google had previously teamed up with Nestle and Hershey's to call Android 4.4 KitKat.