So the Ice Cream Sandwich update for the AT&T Galaxy S II kinda went live. Then it kinda didn't. And we've seen that happen wtih so many Samsung updates that we've kinda grown numb to it. But that doesn't mean we don't care. Here's the official word from AT&T corporate PR, which is a step or five over customer service chats.
We plan for the upgrade to Android 4.0 (Ice Cream Sandwich) for Galaxy S II customers to be live very soon. Like with every OS update, we test it on our servers before we roll it out to customers. We’re in the process of doing that with Android 4.0 (ICS) for Galaxy S II customers and hope to make that live soon. We recommend customers wait to attempt the update.
So that's why you saw it, and now you don't. AT&T tells us it'll have more info at its consumer blog here once the update goes live. Hang in there, folks.
More: Galaxy S II forums