When Google Edition variant of HTC One released, everyone complained about lacking IR blaster support and HTC Sense camera software. However with the Android 4.3 update , IR blaster seems to be working. Many users at HTC One Forum, XDA who already received the update are confirming it. You can download any of remote apps available on Google Play Store and use IR blaster feature.
Other major changes include New radio, kernel, recovery, hboot,larger icons , Audio improvements, Smoother UI with faster animations.
Here is build information of Google Edition HTC One with Android 4.3.
HTC build number: 3.06.1700.10
Build number: JWR66V.H10
Build date: August 1st 2013
Kernel version: 3.4.10
Kernel build date: August 1st 2013
Radio version: 4A.18.3263.15_10.38h.1157.04L
Hboot version: 1.54.0000
Hboot build date: August 1st 2013
OpenDSP version: v31.120.274.0617