Cyanogen announced Cyanogen OS 12 today (based on Android 5.0 Lollipop) and is finally available for OnePlus One users. CyanogenMod 12 offers a Material Design inspired user interface along with all the functional changes of Lollipop. In addition, you also some Cyanogen exclusive features.
One of those new features is a powerful theming engine, appropriately named App Themer, which will give users extensive control over how their phones look. Both free and paid themes will be available for download. Additionally, the updated OS will debut the new Cyanogen email, which is powered by Boxer. It provides some new benefits like Exchange support, multiple account integration, and loads of customization options. The new software will also feature a new boot animation.
The update will be available as an OTA soon, but you can download it now by following the source link below.
source - Cyanogen (Google+) | download