A few AT&T Galaxy Note 5 owners in the US are able to access the Android 6.0 Marshmallow in what looks like a beta testing phase for the device. Previously, Samsung sought beta testers for its latest Android 6.0 update in various markets such as South Korea, UK, and the US where registered users were able to install the beta version on Galaxy S6 and S6 edge smartphones.

Phone Probe reported that close to 200 AT&T subscribers in the US who registered for the Android 6.0 beta programme for Galaxy Note 5 have received an email on how to install the beta version of Android 6.0. A Galaxy Note 5 owner among that group received the update to Marshmallow, and then detailed the changes.

For starters, the update is pretty hefty at a file size of 1.3GB. There are still icon themes that do not match anything from Google, and Samsung still has many preloaded apps on board. The screenshots listed by the user show that most of the blue UI elements have been changed to grey, while Lollipop's secondary yellow accents are now blue.

Most of the features, according to the user, are in tandem with the beta update that Galaxy S6 and S6 edge select users received earlier. A recently leaked document from Samsung shows the Galaxy Note 5 and Galaxy S6 Edge+ smartphones are slated to receive the Android 6.0 update in February.

Android M has so far rolled out to Google's Nexus family of devices and a few OEM smartphones like the Moto X 2015 Pure Edition, but Samsung has yet to begin a wide release of over the air updates.