T-Mobile's HTC One M7 is set to receive an over-the-air update tomorrow, September 10th, that will deliver Android 4.4.3 along with Wi-Fi calling enhancements. HTC's Mo Versi, the company's Vice President of Product Management, took to Twitter this weekend to deliver the news in his usual fashion.
T-Mobile HTC One (M7) Owners! We have received technical approval for 4.4.3 + WiFi Calling enhancements. OTA expected to start on Wed.
— Mo Versi (@moversi) September 6, 2014
T-Mobile has long supported Wi-Fi calling, a feature that lets users circumvent a poor mobile connection by tapping into their home network instead. It's functionality that another carrier only started to implement just this year. This update should somehow improve the experience on T-Mobile's version of the HTC One M7.
As for Android 4.4.3, it's a bugfix release, so don't expect anything in the way of visual changes. For the details, check out some of our previous coverage.