Nexus Player is a media streaming device that runs Android 5.0 Lollipop. Released in October 2014, it is the successor to the Nexus Q. It connects to an HDTV or home theater system to to essentially convert your current TV into a smart TV. The Nexus Player is powered by an Intel Atom 1.8Ghz quad-core processor, has 1GB of RAM and 8GB internal storage. As well as playing video and audio, it also allows you to play Android games on the big screen, and even has an optional game controller available for an improved gaming experience.
Google has sent out factory images of Android 6.0 for Nexus devices and Nexus Player is one of them. Using this, you can manually update Nexus Player to Android 6.0 Marshmallow without waiting for the OTA. The detailed guide is given below.