How can they provide a time table if they don't know what's wrong?
"We're still looking into the issue, and as of yet have no idea what's wrong. That being said, we expect to fix a completely unknown problem within the next couple hours. Or next couple of days. Maybe. We're not sure."
I'm being sarcastic obviously but that's what I'm getting at. People are asking for updates, assuming they can provide them. If they don't know there is nothing they can tell us. If they do know, then yes, information would be great. But we don't know if they know what the issue is. And an update every 10 minutes of "we're still working on it" accomplishes nothing other than wasting time.
Truthfully, just about the only people that this affected are the people on sites like MacRumors that tried to update immediately, or anyone else who happened to catch the update in the hour or two it was up. I would guess the vast majority of the iPhone population doesn't even know there's an issue. So it's probably not worth it for Apple to put so much energy into communicating technical issues to such a small population.
Additionally, are we at all surprised at how silent they are? Apple has traditionally been very quiet with things like this, for example with some of their Mac hardware that have issues. They'll go quiet for months/years and all of the sudden admit there is a hardware issue with a video card.