The OnePlus One has unfortunately been riddled with controversy and delays, and the postponed release of the Lollipop based CyanogenMod 12S is the latest mishap.
However, in what is seen as respite for OnePlus One owners, company co-founder Carl Pei tweeted that the CyanogenMod 12S update had received certification and that it would seed to OnePlus One devices over the next few days.
The device was launched a year back with the CyanogenMod 11S OS based on Android KitKat, and has since been awaiting a Lollipop release. After facing troubles with CyanogenMod Inc., OnePlus also announced its own forked version of Android, i.e., OxygenOS.