"An important software update for iPhone 3G has been available on iTunes since this past Monday," the message reads. "To get it, simply sync your iPhone 3G with iTunes and click the 'Check for Update' button."
Thanks for nagging, AT&T. Since I own an original iPhone that's fully up to date, I haven't received the message. So, dear readers, have you been nagged by Auntie AT&T today?