Last month, HTC's VP of Product Management Mo Versi had confirmed the Android 5.0 Lollipop update rollout for HTC One devices over a Twitter post, specifically meant for the unlocked and Developer Edition variants; though during the announcement Versi didn't specify the regions where the update will first roll out.
The Android 5.0 Lollipop update to HTC One (M7) in India is reportedly (via GSMArena) 774.83MB in size and shipping with build version 7.21.707.105. Notably, this update build version is different from the previously rolled out update build number 7.17.1540.7 (702.52MB) and version 7.19.401.2 (804.78MB), reportedly received by some users in different regions.
Unfortunately, the Taiwanese company hasn't provided any changelog for the HTC One (M7)'s Android Lollipop update. But according to user reports, the new Lollipop update packs new Lock screen, Lollipop-style notifications and user interface, improved privacy features, and the addition of a search function within Settings. The Recent apps menu is now said to support multiple pages and removes the current limit.
Replying to a user on Twitter on whether the HTC One will be receiving the Android 5.1 Lollipop update as well, Versi had confirmed the news earlier this month. Further, Versi also confirmed that HTC will push out Android 5.1 for the HTC One (M7) GPE by early April.