This is a pretty significant announcement, especially considering that Apple has fallen under criticism as of late for dropping 'Computer' from their name and seemingly shifting their focus from computers to consumer devices such as the iPod, Apple TV and now Mac OS X-delaying iPhone. In a way though, I'm not surprised either, as a number of Mac OS X developers have expressed disbelief that Apple was going to hit a June release with Leopard in its currently buggy and fairly unfinished state.
On the bright side, this hopefully can be taken as a sign that Apple is still committed to releasing quality software, even if slightly late this time around. The company could simply have shipped in June and issued 'Service Pack 1' later to patch all the gaping holes their customers found. But that wouldn't be very Apple, would it?
[Update: Still nothing at apple.com/pr, but it has been posted to Apple's Hot News site: http://www.apple.com/hotnews/]