Work on CyanogenMOD 10.2 began the day Google released the Android 4.3 source code to AOSP, and it looks like the fruits of that hard work are beginning to show.
Nightlies — official versions of buggy, experimental code — have been made available for many top-tier products, including the Nexus family and the Galaxy S4.
While Android 4.3 was not a significant update, especially aesthetically, it brought a tightening of the underlying Android code along with improvements to WiFi, security and overall performance.
If you want to check out CyanogenMOD 10.2 on your particular device, head over to get.cm for all the files.
Source: CyanogenMOD Blog