Android 8.0 Might Be Called Oatmeal Cookie
As of right now, the update is known as Android O or Android 8.0. While the version number will probably carry over to the final version, the Android O name won't.
Google still hasn't confirmed an official name for Android 8.0 but it looks like the internal name at Google could be Oatmeal Cookie.
References to "oc-dev" in the Android source code, discovered by Myce and seen in the screenshot here, hint at the name. The "oc" in oc-dev and OC-MR1 could be an abbreviation of oatmeal cookie.
This isn't the first time the name "oatmeal cookie" has popped up. References were also spotted in code at Google I/O back in May.
Look for the name to be confirmed when the company announces the final Android O roll out for the Nexus 5X and other Nexus-branded devices.