I'm not particularly surprised that there were no new product announcements, but I am kinda surprised that there wasn't the slightest acknowledgment of it on Apple's website (at least I couldn't find a word about it).
On the plus side, Apple did get a lot of free publicity from internet articles, newspapers, magazines, and TV giving Apple a lot of (mostly) positive, free-of-charge attention. In that backdrop, it's not hard to understand why Apple wouldn't want to provide a distraction from all of that by way of new product announcements.
On the minus side, Apple's 30-year and counting heritage in the industry is especially unique in that Apple has, pretty much from the very beginning, maintained legions of fawning, adoring, loyal fans who just don't buy the stuff, they also are quick to distinguish Apple's products from the competition to anyone who will listen on their own initiative - without any sort of prodding, nudging, or inducement from Apple. Most companies, notably Microsoft, couldn't buy a fan base so loyal and outspoken. It's also widely believed that the iCult(TM) single-handedly kept Apple alive when it was on it's deathbed in the mid 90's. It would have been nice to see Apple, if for no other reason than to recognize the loyality of it's fan base, acknowledge in some way the 30th year milestone on it's website. The Apple faithful would have eaten it up.
I kind of remember that Jobs pointed out the coming anniversary at this year's Macworld and remarked that they haven't decided what they were going to do about it. Well, looks like they are still thinking...or maybe not.