The CyanogenMod team has been moving very quickly with version 10.2 development based on Android 4.3.1. This weekend, the first release candidate hit the download sites. I had been playing with a few nightlies, which have also proven stable, but there’s no guarantee with nightlies.
CM 10.2 RC1 is fast and stable. Updating went smoothly and I’ve encountered no issues so far:
The CM team is working on version 11, based on Android 4.4, in parallel with finishing the 10.2 development. I’m not thrilled with some of the changes in Android 4.4, especially losing the recent call list and incorporating Google+ data into everything, including caller ID. This approach seems to kill any hope of privacy even on your own phone. Hopefully, the CM team can correct these defects.