Android 5.1.1 Lollipop update will start to roll out to HTC One devices including One M9, One M8 and M7. This report has been confirmed by HTC's Mo Versi.

Versi, HTC's VP of Product Management, said on Twitter that Lollipop's final update will hit One devices "very soon." As many US mobile carriers and mobile phone companies have been scrambling to get the update, HTC One M9 has already a sure seat for the firmware installation beginning with AT&T, Verizon Wireless and T-Mobile.

Fortunately for some, Android 5.1.1 Lollipop has been made available earlier than expected. AT&T has first released the installation last July 15 while Verizon Wireless and T-Mobile followed suit last July 20.

However, the Taiwanese tech giant has not provide changelog yet for the update. Nevertheless, the update must have brought in various tweaks and improvements for One M9 units.

Meanwhile, One M8 handsets have seen updating too in just a couple of days. Although neither Versi nor anyone in the company has not given a hint as to when Android 5.1.1 will come out for One M8, one sure information points out mobile carriers have expressed plans of releasing the update soon.

Last March, Verizon Wireless, Sprint and T-Mobile are the first to roll out Android 5.0 Lollipop to One M8 while AT&T went ahead of the rest by updating last April the device with Android 5.0.2.

In the UK, HTC has yet to announce the Android 5.1 Lollipop update to the device which means Android 5.1.1 might not be readily available in all One M8 units worldwide.

Fingers are still crossed for some one M8 and One M7 owners because according to reports the Taiwanese brand will most likely update first some select handsets with Android 5.1. In another report, HTC is rumored to skip Lollipop 5.1.1 and head over to Google's upcoming Android M.

As per reports, Android M will begin to roll out to One M9 and One M8 before the year ends and shortly after the 5.1.1 update. Android M has been currently in the lab for a series of tests since it is still in the Developer Preview stage.

Expectedly, Android M will bring in more exciting features and necessary improvements for both use and design. Some features surfaced include a promising fingerprint recognition security and Apple-pioneered USB Type-C.