If anything, the biggest short-term change I see is a decreasing level of energy and excitement over “keynote speeches”. Jobs clearly had a gift in discussing new products in a way that really excited people and made them anxious to buy them. Most of Apple’s other speakers I’ve listened to (including Tim Cook) don’t have that kind of charisma. I think many of Apple’s bigger product announcements will sell themselves anyway, but the problem will come during slower periods. Steve could take a minor iPhoto software update and make a crowd feel it was a really big deal. Not sure anyone else there can pull that off?