Unless the announcement was going to be the same day as the funeral, which several people who would be at the announcement wanted to attend, delaying the announcement makes no sense.
Previously, they could have made their announcement before the 4S launch. Now they'll announce after, possibly losing a lot of potential customers who go out and buy a 4S in lieu of whatever may have been announced that might persuade them to hold off for that instead.
Steve always struck me as the type of person who wouldn't have put up with this kind of nonsense. If he had died before the Apple announcement he probably would have spent some of his last hours telling the rest of the company that they'd damned well better present on time or he'd come back to haunt them.
yes it does, chances are that they were going to rehearse all weekend long. now they have a funeral to attend. not like they were going to go on stage and just wing it