Back in March, a 205MB update for the original HTC One M7 went out to a few users in mainland Europe. It added support for more routers, which suggests there was a bug or two to fix, but it also replaced an existing Android 4.4.2 update that was pulled.
Today, some users worldwide are seeing the same update. It bumps your version from 4.19.401.9 to 4.19.401.11 and addresses whatever issues there may have been with the Wifi.
Slightly confusing, but we recommend you accept it and stay current unless you've already altered your firmware.