Just increased the FUD level, while rendering toothless most of the potential class-action claims.
I suspect they saw how clearly in the wrong they were.
Jobs had to have been PISSED when he found out. Makes it quite personal - makes him out to be a liar, plain and simple, otherwise. They seem to have done a good job, so far, of covering-up whatever squabbling went on over this, and I'll bet it was considerable.
Would love to get the back-story. This happened suddenly and without much planning.
What we don't know yet:
1. How long this is for - for a few months at least, (enough to satisfy people that Job's claim was true) or just to accommodate un-shipped iPads 3Gs? (Or until production catches up.)
2. Will you be able to stop/start, and if you do, will there be sufficient notice to start and "grandfather" when they finally do eliminate "unlimited".
It's ironic that now both sites aren't showing unlimited, but it IS available! They just can't get the customer-communication right. At this point, it's a heads-you-win, tails-you-lose situation. For both customers and ATT.