Quoted from Rarehero:
It states that anything considered questionable has been bleeped ...safe to assume family mode. Words like f*ck and sh*t were bleeped but words like bastard weren't ...so now anything you wouldn't want the kiddies to hear is bleeped. Anyway, I'll verify in a few minutes when this update is done but this is f*cking Metallica, why would it be censored in Adult mode? Family Guy isn't censored in Adult. Sopranos isn't censored in Adult.
Harry Reid thought it would be a good idea to clean it up a bit.