Did you get your Android N name suggestion in yet? If not, you missed your chance. Google has closed submissions and says the final name will be announced in the coming weeks. So, pay attention in late June or early July.
— Android (@Android) June 8, 2016
The #NameAndroidN campaign was announced at I/O to help Google decide on the sweet treat that would represent the latest version of Android. As the company explained, there aren't as many options for this particular letter. Although, I'm willing to bet Google already had a pretty good idea what it was going with.
Our first clue to the final name of an Android version is usually the arrival of a new statue on the Google campus. There will surely be a blog post and a landing page for the OS soon after. In the past, it's only been a few weeks between this reveal and the initial rollout of the OS to Nexus devices. Stay tuned.