Well now, HTC’s US President, Jason Mackenzie took to Twitter to give us some info on Android 4.3 Jelly Bean coming to HTC One and HTC Droid DNA. He has tweeted the following message :
Lots of questions re 4.3 release for One. We r wrking hard (needs cert) to release 4.3 across all US, Canada skus by end Sept. DNA as well.As you all know HTC is quite notorious when it comes to updates. The HTC smart phones have somehow been last to adapt to the latest versions of Android, so keeping my fingers crossed. However in another development, Jason confirmed that HTC One developer version user will get a Android 4.2.2 minor update and the phone will directly get updated to the Android 4.3 Jelly Bean.
— Jason Mackenzie (@JasonMacHTC) August 19, 2013
Meanwhile HTC One X has already started receiving Android 4.2.2 updates with Sense 5 U.I. You can read all about it here. This sounds like a precursor to the formal updation/upgradation to Android 4.3 Jelly Bean