Asian HTC One M8 Gets Android Marshmallow
The HTC One M8 has already received the Android Marshmallow update in some countries and now HTC is releasing the update in Asia. The Android 6.0 Marshmallow update has now been released for the Asian variant of the One M8 and it brings a range of new features to the handset.
The update is around 1.14GB in size and you can check to see if it is available for your handset.
Source HTC Source