It’ll be a little while before we start to see actual builds of CyanogenMod 11 for the Google Nexus 5 and other phones and tablets, but developers (and enthusiasts) can start digging through the code and making contributions.
CyanogenMod is based on the Android Open Source Project, but includes a number of performance tweaks and customization options such as the ability to alter the tiles available in the Android Quick Settings pull-down menu.
According to the developers, many of the features of CyanogenMod 10.2 (based on Android 4.3) still work in Android 4.4, but some items including the phone app, launcher, and lock screen still need some work.
It’s not surprising that the CyanogenMod developers are among the first to start working on custom ROMs based on KitKat — while the project was started by a team of volunteers, a group of core developers founded a company earlier this year, allowing them to work full time on developing the software.
It’s likely that other popular ROM builders will start working with Android 4.4 soon as well.