The Android N is the upcoming version for the Android operating system. Google under the AOSP project has asked various Android enthusiasts to name this brand new Android OS. You can submit the name by visiting the Android official website or just submit it from the portal below. You may also want to check out this video and know how it works: Android N: Let the names begin.
Also, let us know what Android name you have chosen by commenting it below. You can install the latest Android N Developer Preview 3 from this tutorial: Download and Install Android N Developer Preview 3 OTA and Factory Image. You may also want to check out the Android Wear 2.0 Preview for various wearable Android technology like smartwatches.