After a little bit of a false start several days ago, it looks like the much-anticipated Android 4.0.3 update is rolling out for the AT&T flavor of the Samsung Galaxy S II. The update was available briefly a few days ago via the Samsung Kies update software, but Samsung pulled the file saying it was merely a "test."
Users from XDA have now successfully installed the update through Kies on stock devices. It's looking like the update is not going to go out over-the-air, but will be restricted to Samsung's old-fashioned desktop software. That means you'll have to plug your phone in with a cable to run the update, like it's the middle-ages or something. The version now in Kies appears to be identical to the test build from the other day.
ICS is expected to bring some nice UI enhancements, redesigned apps, and various bug fixes. Of course, TouchWiz will still be on-board, and don't expect any of the magical Galaxy S III features to be back-ported.