The Android device manufacturers including Samsung are busy rolling out the Android 5.1 Lollipop updates to their flagship models. So far, we have not seen the update rolling out to the HTC devices, but the recent track record confirms that we can see one soon.
As per LlabtooFeR, HTC is working on the Android 5.1 Lollipop update for its flagship smartphone One M9 that will take the device to the build number 2.7.401.1. The report has revealed a sneak peak on the update and a few changes that it might bring in to the smartphone.
The source suggests that HTC will be letting its users to adjust the color temperature of their smartphone display. It is a feature that can be found on TVs or monitors, but it will be definitely interesting to have it on the smartphone.
Apart from this, the Android 5.1 Lollipop update is also claimed to add the multi-user support to the One M9 as shown in the leaked screenshot. The other minor tweaks that the update will bring include enhanced sound controls and new UI animations.
This update might be rolled out to the HTC One M9 units in the U.S. in the coming weeks or months. You can also try rooting your smartphone to flash the latest ROM from the source.