Umm, seriously??
Apple has been repeatedly bashed for focusing too much on iOS devices, to the detriment of their core computer product line. (They took people off of working on OS X to finish fixing things on the iPad, etc. etc.)
Now, it sounds like they're trying to bring the focus back to the Mac again for a little while, and people are complaining??
Why would you feel a need to get a new cellphone every single year? Contracts tend to run 2 years, discouraging you from upgrading that often anyway. But regardless, all of the recent "smartphones" I've seen are built well enough so they'll easily hold up for a good 2 years of use. All of the things I'd really need to do on a mobile phone will work fine next year, just the way they work this year. Even if you're just hung up on having "the latest thing"? If Apple delays release of the iPhone 5, then the 4 remains the "latest thing" from them for a while longer.
More to the point of the original topic though? I can definitely see why this WWDC would be a critical one, in many ways, to talk about a lot of software changes! Apparently, the Linux community is rapidly switching over their software to the "GPL3" license, which has a lot of "gotchas" in it that try to restrict what commercial businesses can do with the code. Essentially, they're trying to keep companies like Apple from benefiting from their free, open-source projects, and keep them for Linux users instead. The Apache web server is moving to a GPL3 license, for example, as is the gcc compiler and Samba.
Apple has to start moving to alternate products for all of this core functionality and get developers up to speed on the changes, or we're in for a LOT of reduced functionality in future OS X versions.
That's just getting complacent in my opinion, people like myself like changing phones yearly, no new iPhone means no return business, I'll try something else instead, bad move if true.