Nexus 7 2013 Android M Update
Google hasn't confirmed a Nexus 7 Android M update but a Nexus 7 2013 Android M release seems likely.
Company policy mandates that devices will get Android updates for at least 18 months. More often than not, Google extends support to two years. The Nexus 7 is now two years old which means that it's definitely a candidate for the Android M release.
Rumors suggest that it will get the Android M update. Android Police claims that the Nexus 7 2013 will "have system updates until later this summer and security patches through summer 2016." That means that Android M should roll out to it later this year.
Nothing is confirmed but odds are good that we'll see a Nexus 7 Android M release for the 2013 model. That should include the Wi-Fi version and the LTE version.
As an Amazon Associate I earn from qualifying purchases.