It's not beta as in "untested and may or may not work or set your computer on fire"
Well, it might, actually, but not after a couple of days when the guinea pigs early adopters have taken a crack at it 
If anyone's computer catches on fire we fix the bug that caused it pretty quick
In all seriousness though, generally speaking, total balance breakers usually get fixed within a week. Total game breakers (as in, makes the game unplayable) usually gets fixed within a few hours or at most a day. (I remember that time Chris pushed out some minor updates on
Christmas Eve because there was a few game breakers that accidentally got pushed out the day before. That's dedication! Though I have to wonder what your family thought of that.
)
