HTC One M9 and M9+ won't be the only HTC device to get Android M update, HTC will announce more devices soon. We can't be too sure as many HTC devices are yet to receive Lollipop updates as well. Google says that Android M is its "most powerful release ever", bringing "hundreds of improvements", including an enhanced UI, custom Chrome tabs, App links, Android Pay, simplified app permissions control, improved battery life and more. Since there is no exact release date for Android M, it's hard to tell when the update of Android M will arrive on HTC smartphones. HTC is the first company to confirm Android M updates for its devices. While Android M is still a few months away from public release, it is good to see manufacturers pledging updates this early. All we can do is wait and watch! PS: Did you find out about the new Android M easter egg?
Good news! The HTC One M9 and M9+ will be updated to Android M, with more devices to be announced soon.— Jeff Gordon (@urbanstrata) May 28, 2015
Google announced Android M yesterday, and just after that HTC confirmed that the One M9 and M9+ will be getting the Android M update this fall. Both the One M9 and the One M9+ currently run Android Lollipop out of the box. Jeff Gordon, Senior Global Online Communications Manager at HTC, confirmed this news on twitter.