OnePlus One owners who are waiting for the Android 6.0.1 Marshmallow update, there is a good news for them. Cyanogen team is preparing to release Android 6.0.1 Marshmallow based CyanogenMod 13 (build number ZNH0EAS26M) for OnePlus One. According to news source, the update will be released tomorrow (April 9). As usual, the CM13 over the air rollout will be in phases, so it will take sometimes to get the update on your phone.
Android 6.0 Marshmallow was assured to OnePlus One by OnePlus and the release is imminent. Latest news reveals that the OnePlus team is preparing to release the Android 6.0 Marshmallow based OxygenOS 3.0 for OnePlus One. At the same time, Cyanogen Inc. will release the first stable build of CyanogenMod 13 for OnePlus One on tomorrow.
CM13 will bring Android 6.0.1 goodies, such as the battery saving ‘Doze’ functionality and new personalized permissions model, alongside the CyanogenMod features like Snap Camera, new SMS app, etc. to OnePlus One.
At the same time, OxygenOS 3.0 will bring new features like the new OnePlus Camera UI, new wallpaper picker and a better Shelf UX. Also, OxygenOS 3.0 will give better performance improvements, better battery life, and more. (Source)