Vodafone and Optus both have the update pushing out now
Several different variants of the HTC One have been receiving their Android 4.4 updates in the last few weeks, and now it's Australia's turn. Vodafone's support pages are confirming that the update is rolling out to its devices, while we're receiving tips that HTC Ones on Optus devices are also pulling down KitKat.
The combination of Android 4.4 and Sense 5.5 on the HTC One isn't a groundbreaking change, but there are a few different features that you'll be able to look forward to in this update. If you're in Australia using an HTC One, now's the time to start checking for updates in the settings menu.
Source: Vodafone Australia; Thanks, John!