This shouldn't happen.
When my 4yr old tells me he did something "wrong" without any prompting (eg. "Dad, I broke your phone"), I'm impressed because he didn't have to out himself, but did so because it was the right thing to do.
Large corporations rarely think in terms of right and wrong... they have a duty to their shareholders, and nobody else. As far as their shareholders are concerned, they shouldn't release damaging information unless not doing so could potentially negatively impact profits down the line. So when Apple tells you they messed up, they're only doing so because they're worried you might find out some other way, which would be worse for them. They aren't doing it out of the kindness of their hearts.
Now if there were a law requiring the disclosure of incidents such as this when personal information is compromised, then Apple wouldn't have a choice in the matter, and they wouldn't be able to fool people like you into thinking they're awesome when they just lost your data through negligence.
> It's entirely possible that this is a massive oversight by Apple and they've been extremely negligent in their security policies.
They just said they'll be updating their software. Why would they do that if they didn't think that that would make the data safer. It's pretty much an admission that they chose not to update the software earlier ie. someone made a decision to use outdated software.