About two months ago, Google celebrated that their latest version of their personal operating system for smartphones and tablets, Android M (also known as version 6.0 or Marshmallow) was rolling out. Fortunately, users of any Nexus devices will be the first to get them, and the newest always come first. This leads users of Nexus devices like the Nexus 4, 5, 6, 7, 9, and 10 (various versions) wondering when or if it will come on their subscriber like Verizon , AT&T, T-Mobile, and Sprint.
According to Android Pit, the update of Android 6.0 Marshmallow OTA (over the air) has already begun. Needless to say, the rollout will occur in stages, with carriers like Verizon, AT&T, Sprint, and T-Mobile. Of course, the Nexus 5X and the Nexus 6P have already received their update, as Google wanted to make certain that its newest Nexus series got it first. By now, users of the Nexus 5X and 6P have their Marshmallow, as it should have come with it right out of the box.
But what about other, older Nexus devices like the Nexus 4, 5, 6, 7, 9, and 10? Well, there is some good news and some bad news about those particular devices, so we'll start with who will not be getting Marshmallow. The Nexus 4 will not be receiving it, and the same goes for the Nexus 10. Unfortunately, that is how it goes for older Android devices, and even though these are not that old, they just aren't eligible, apparently. The same applies for the Nexus 7, 2012 version. This is no surprise, because usually the cut-off point for new Android upgrades are devices that are two years or older.
This leaves the newer Nexus 5, Nexus 6, Nexus 7 (2013 version) and Nexus 9, not to mention the Nexus player. According to Tech Radar, all of these devices, as well as a whole range of Android One smartphones are getting the Android Marshmallow update right now.
In fact, it looks like as of the beginning of October, two months ago, that Google was publishing their "factory image" download files for Marshmallow for the Nexus 5, Nexus 6, Nexus 7, Nexus 9, and Nexus Player, according to Know Your Mobile. The "factory image" are files that allow users to manually install Android 6.0.
In other words, if you are a user of the Nexus 5, Nexus 6, Nexus 7 (2013 version) and Nexus 9, then you should be able to go to "Settings", and check to see if that software update is available. Chances are, your phone should have informed you already. Of course, this could vary depending on the device and carrier, and it is recommended that you contact your carrier if you find out that your Nexus device doesn't have its upgrade already.
If you want to check on the OTA file links for the updates, you can find a good one on Android Central that was published early last October.