Verizon has at last started rolling out the much-anticipated Android 4.4 over-the-air (OTA) update to all its carrier-branded HTC One handsets located in the United States. Folks in the U.S. have reportedly already been receiving this hefty 617MB upgrade which brings KitKat and Sense 5.5 to the handset, in addition to a multitude of additional bug fixes, stability improvements and speed optimizations.

The HTC One was released back in March, 2013, and packs a gorgeous ultra-bright 4.7-inch super LCD3 capacitive touchscreen with a resolution of 1080 x 1920, a Qualcomm APQ8064T Snapdragon 600 chipset powered by four 1.7GHz Krait 300 CPU’s, an Adreno 320 GPU, 2GB of RAM, 32GB/64GB of non-expandable flash memory, a 4-megapixel “UltraPixel” camera and a 2,300 mAh non-removable Li-Po battery.

The full changelog for the Android 4.4.2 over-the-air update can be seen below:

• Android 4.4, KitKat: Android 4.4.2, KitKat, is the latest release of the Android platform. KitKat includes enhancements such as restyled status and navigation bars, a new full-screen mode, color emoji support, improved closed captioning support, stronger security, smarter power use, and more tools and capabilities for better app development.

• TouchWiz UI improvements and optimizations.

• Phone dialer: Improved the phone app with the ability to look up contacts directly from the dial pad, see and tap frequent contacts, and search your corporate directory easily.

• Camera – Focus and exposure: Enhanced the “touch to focus” option with a new circular, on screen control that can be dragged by your finger around the viewfinder to adjust a photo’s focus and exposure.

• Gallery – Photo editing: Added new photo editing options to the Gallery app including new filter effects, draw on your photos, advanced cropping, and adjustments to color, exposure, contrast and more.

• Printing documents and pictures: Added support for printing photos, Google Docs, GMail messages, and other content via Wi-Fi, Bluetooth and hosted services like Google Cloud Print and HP ePrinters.

• Hangouts – SMS/MMS support: Incorporated a new version of Google Hangouts that supports integrated SMS/MMS messaging. Hangouts can be set as the default SMS app under Settings > Wireless > Default SMS app.

• Accessory: support Added support for Square credit card reader.

If you own a Verizon-branded HTC One and have not yet received the OTA update, you can head into “Settings,” then “About Device,” and select “Check for Updates” to manually scan for the upgrade. Alternatively, you can wait for the push notification to arrive on your handset prompting you to download and install the software update.