HTC One International variant is started to receive the official Android 4.3 Jelly Bean update and the roll out will be continued till November-December until all devices will running on the latest firmware.
HTC began the firmware update roll out since the Samsung also started to roll out Android 4.3 Jelly Bean update to its high-end devices, Samsung Glaxy S4, Note 2 and S3 as well. But last week, I have got an update of around 70MB of Android 4.1.3 version still as many users reported it. Some rumors suggests that by the end of December, all these devices will be starting to get the latest firmware, not KitKat.
The screenshot of update screen on HTC One shows that the firmware file is of a hefty 675MB size, obviously, you should go near a Wi-Fi zone soon. HTC has added an additional feature to official feature upgrades in 4.3 – its own Sense 5.5 user interface and you can also disable the BlinkFeed post the update.