I have certain doubts regarding nightly builds.. How to update..?? What is the time gap between two diff builds..??
Nightlies as name suggest, are usualy updates daily, these are experimental builds, so it may have bugs, it will turn into a Stable/daily driver once CM finds it as completely bug free, it's also related to feedback from testers through which they decides whether it's time for Stable release or not. So if you have doubts or want stable release, wait for time being, CM team are the best arround for any device when it comes to Android development, i haven't flashed today's build yet, and didn't found any issues so far with the last night build. Hope my brief post will enough to clear your doubts