CM12 nightly is here!!! This was announced on 5 Jan 14. This is the official nightly from CyanogenMod. The OnePlus One Cyanogen version CM12s is suppose to arrive in Feb 15. Only time will tell.
During the Christmas break I took some time to test drive various builds of CM12, LiquidSmooth and Daleski75. These are nightlies so bugs are expected. There were no crashes but my battery drain sometimes goes nuts. I was bearing with it until in Jan 15, it turns out a new driver for radio is required.
Without the new driver, the proximity switch will not work, so the screen stays on during a call. I am leery of flashing modem drivers after the Samsung S2 experience. The modem software generally stays after subsequent build flashes. So I jump back to stock KitKat, 44s. Later I found to get back to modem stock, flash the “NON-HLOS.bin” file.
Other issues I found was the softer mic and swap position of volume keys in landscape mode.
In the meantime the nightlies was pulled on 13 Jan when it was found after encryption to brick devices with TWRP. Regular nightlies service are slowly being restored. 16 Jan build contain at least 3 pages of fixes.
I think I am going to sit out the CM12 nightlies for the next few weeks. May be till cm12s is out
TL;DR: I am going to wait for CM12s