I would not bother waiting more than a few days... if you don't see panic set in my monday, go with it.... The versions that came August/Sept were pretty bad, but the one before this one was good for almost everyone. Since your under warranty, and really recent, you can feel confident that if something is "bad" that Yunneec will make it right. All the issues and feelings you see on here aside, 99% of the time they seem to make it right...
I would not hesitate in your shoes... but for those that have no warranty left, I would be way slower to update....