HTC Commits to Android L For One (M7) and (M8)
 

In a rather surprising move, HTC is the first OEM to promise an update to Android L. HTC has stated that this policy is part of their HTC Advantage program and that this will apply to the One (M7) and One (M8). There's also the caveat their 90 day delivery promise applies to when HTC first receives the code, not when the developer previews go live.

http://www.anandtech.com/show/8208/h...-one-m7-and-m8