Yes, it was released in July.
https://support.htc.com/en-uk/005-HTC_One/010/080
Checking for updates manually
Go to Settings, and then tap About.
Tap Software updates. HTC One checks if updates are available.
Note: If you don't have Internet connection, you'll be prompted to turn on mobile data or connect to a Wi-Fi network. Once connected, tap Check now to check for updates.