If you're using an HTC One M8 or LG G Stylo on T-Mobile, your wait for Android 6.0 Marshmallow is now over. T-Mobile's support documents indicate that the Marshmallow update has started rolling out for both phones, bringing along a number of improvements, including features like Doze Mode, granular app permissions and more.
According to T-Mobile, the update for the HTC One M8 should bring it up to software version 6.20.531.5, while the LG G Stylo will move up to software version H63120b. Keep in mind that, since the update only just began rolling out, it may take some time to reach everyone. Once you do get your hands on the update, however, be sure to shout out in the comments below, and chime in on our forums with your thoughts on the update!
Newer model: HTC One M9