Device Updates is here, and you Sprint HTC One users are probably as happy as can be right now. Other carriers will hopefully get it soon. Just be a little more patient.
Device Updates
Galaxy S4 Android 4.3 test build
Android 4.3 hits Sprint HTC One
HTC addresses Android 4.3 for other HTC One variants
HTC EVO 4G LTE will get Android 4.3 at the end of the year