If you’re buying a Nexus device, chances are you’re either a consumer looking for a solid unlocked phone, a developer building new apps for Android, or a smartphone enthusiast who always wants to try the next version of Android. The party can only go on so long, however, which means eventually one day your phone will reach the end of its update life. Google recently listed exactly when that will occur for the modern Nexus devices.
The Nexus 6P and Nexus 5X will be supported until next September, so you’re good there. The Nexus 9 and Nexus 6, however, will reach their end of life this October. And as we already know, the Nexus 5 hit its end of life back in October 2015, while the Nexus 7 (2013) and Nexus 10 were retired in July 2015 and November 2014, respectively.
This doesn’t mean the devices will stop working, of course, it just means Google “can no longer guarantee that a device will get version updates or security patches.”