The facts point towards Apple being incapable of thinking beyond the moment. They are the ones who got rid of the OS X awards at WWDC (a slap in the face to long-time Mac developers). Just because the iPhone is hot right now, Apple can't continue to recognize OS X development, too?! Steve didn't even mention OS X or Macs during his keynote as far as I can remember. There wasn't even a Mac on stage during the keynote, was there? (is this a first, btw?).
What signal does this send? It would appear to show that Apple is directing their total focus at this moment towards the i-devices and away from their computers. It is the people who are questioning the increasing disappearance of OS X and Mac from Apple's announcements that are looking beyond the present moment, IMO.
Exactly, but it is Apple's lack of focus on these computers that is of concern. They have stated in the past that they diverted resources from OS X/Mac towards iOS/iPhone. Unless they state or demonstrate that they've "undiverted" those resources back towards their desktops/etc., then it shows Apple is either overly focused on the iOS/iPhone 4 moment, or at least doing a very poor job of indicating that they are still also completely behind developing the Mac platform for the long haul.
I love my iPhone and very much look forward to buying an iPhone 4. But I haven't forgotten that my Macs are still my "digital hub". It'd be nice for customers and developers to have some concrete reassurance that Apple hasn't forgotten this, too. With a company of Apple's means, certainly they can develop for the i-devices without neglecting their traditional (and as you indicate, still integral) computers.