HTC had announced that it will roll out Android 5.0 Lollipop update to all its smartphones under the One lineup. Staying true to their words, HTC rolled out Lollipop update to the One M8 a few weeks ago. Now, HTC One M7 is receiving the Android Lollipop update in India.
The OTA update has a file size of 775MB, and is being rolled out in batches, so it is possible that your device might not get it today. Android 5.0 Lollipop brings an overhauled UI, performance improvements, security and privacy enhancements, Guest Mode, and a lot of other features.