Google announced back at Google I/O last month that they were allowing users to submit naming suggestions for Android N. During the announcement, Dave Burke, the VP of Engineering for Android, joked that they aren't going to name it "NameyMcNameFace". However, in Android N Developer Preview 4, that's exactly what they did. The easter egg that has appeared in every version of Android (go to Settings > About Phone and continuously tap on the Android version number, reveals the egg), now says "NameyMcNameFace". Of course, this isn't the final name for Android N, or is it?
As of now, Google hasn't officially announced the name for Android N. It's expected to be announced in a few weeks though, as they teased across their social media accounts earlier this month. Lately, Android's SVP Hiroshi Lockheimer, has been teasing "Nutella" as the name for the next version of Android. Which is what most people are expecting it to be. Especially after the partnership that Google struck with Nestle for Android 4.4 KitKat almost three years ago. It wouldn't be surprising to see them do it again.
Obviously, this isn't the only thing that is new in Android N Developer Preview 4. There's a slew of small changes here, no huge new features though, given that this is the fourth developer preview. Additionally, Google is giving us the final API's for Android N. Which means developers can now bake in some of the Android N features into their apps, and Google has opened the Play Store for publishing these apps with Android N features. Allowing developers to get help from users in testing these new features in their apps. This developer preview also marks the final SDK for Android N. So developers can download that and get started coding their new or existing apps.
If you haven't already, you can download the factory images for the Nexus 5X, Nexus 6, Nexus 6P, Nexus 9, Nexus 9 LTE, Nexus Player, Pixel C and the General Mobile 4G (Android One handset), and start playing around with Android N. It's full of mostly small features and changes, that make for a pretty big overhaul to Android as a whole.