My Nexus 6 from only a couple of years back however doesn't have Nougat and doesn't look like it's going to. It still work great though.
Full Image https://developers.google.com/android/nexus/images#shamu? (Direct link) https://dl.google.com/dl/android/aosp/shamu-nbd90z-factory-9...
Over the air update https://developers.google.com/android/nexus/ota#shamu (Direct link) https://dl.google.com/dl/android/aosp/shamu-ota-nbd90z-78a93...