An upgrade schedule for most of HTC's current generation Android devices has leaked, revealing how soon you'll get an update to Android 6.0 'Marshmallow'.

HTC's highest-end handsets will get Android 6.0, accompanied by Sense 7.0, first, starting with the HTC One M9 in "Late December 2015".

The HTC One A9 shipped with Android 6.0 on-board, but will receive Android 6.0.1 in "Early Q1 2016".

Most other handsets will get Android 6.0 or 6.0.1 no later than Q2 2016, although which version you get will depend on the handset. Some devices will be upgraded straight to Android 6.0.1 from Android 5.0.2 or 5.1, while others will get Android 6.0 while HTC evaluates an upgrade to 6.0.1.

HTC One M8: Android 6.0 already rolling out
HTC One M9: Android 6.0 in Late December 2015; 6.0.1 in Q1 2016
HTC One A9: Android 6.0.1 in Early Q1 2016
HTC One E8, One M9+, ME, Supreme: Android 6.0 in Q1 2016Know when your HTC smartphone will get Android 6.0 Marshmallow
HTC Butterfly 3: Android 6.0.1 in Q1 2016
HTC One M8s, Desire 816, Desire 526: Android 6.0 in Q2 2016
HTC Butterfly 2, Desire 826, Desire 820, Desire 626: 6.0.1 in Q2 2016
HTC Desire Eye: 6.0.1 in "evaluation" stage
HTC One M7: Not getting Android 6.0

More update coming soon.
>>>> http://www.tuneftech.com/2015/12/know-when-your-htc-smartphone-will-get.html