The CyanogenMod team has been hard at work on merging Android 4.2.1 Jelly Bean with its sources. The team has been slowly adding all the features from CM10 to CM10.1, making sure they don’t cause any stability issues.
While unofficial CM10.1 builds for quite a few Android devices are available on XDA forums of the respective devices, the CyanogenMod team is going to make things easier for some of us. Beginning from today, the CyanogenMod team has started rolling out the official CM10.1 nightly builds for the Galaxy Nexus (GSM), Nexus 7 and the ASUS Transformer Pad Infinity. The Nexus 4 and the Nexus 10 have already been enjoying official CM10.1 nightlies for sometime now.
Apart from adding more devices to their stable, the CM team is also working on adding more features to CM10.1. The team, recently, added the ability to customize the Quick Settings notification pane in CM10.1, making the feature much more useful.
Looking at the way the CM team is working, most of the devices that would be supported by CM10.1, should get official nightlies by Christmas.