Today, HTC UK official twitter handler confirmed that the company will soon start the roll out of Android 6.0 OTA update for HTC One M9 users.
Great news! We'll be rolling out the Marshmallow update for the HTC One M8 over the next 48 hours. One M9 to follow shortly.
— HTC UK (@HTC_UK) January 18, 2016
It being a long time since Google officially revealed Android 6.0 Marshmallow, their next generation of Android operating system. Many of the OEMs still working hard to push the latest Android update to theri selected flagship phones.
You can read all about Android M, including new features and detailed changelog by clicking here. Some of the new features included in Android Marshmallow update are app permissions, which allows you to set permission regarding which app will able to get access to voice and camera.