Apple’s quarterly results showed the Mac down 13% year-over-year. Everything was out of date; the new MacBook Pros didn’t ship until Q3 in July, so that certainly didn’t help. John Voorhees also has some handy charts over at MacStories.
I really hope Apple starts to get the Mac back in shape soon. They showed a relatively strong offering of Mac software at WWDC, probably the most exciting since the reveal of the trash can Mac Pro in 2013.