If you ask Digg co-founder and Google Ventures partner Kevin Rose, changes in iOS 7 are more than skin deep. Additionally, Rose in the latest episode of The Random Show makes claims - without divulging his sources - that WWDC will bring us updated MacBook Airs.
I approve his message - it's fairly safe to assume Monday's keynote will see a specs upgrade for the Air (Retina, much?) and quite possibly for the Pro, stemming from Intel's just announced fourth-generation Haswell chips.
More importantly, Rose mentions iOS 7 will be "very different" from what we've been accustomed to. The way he phrased it, you may not want to put much faith in iOS 7 renderings and mockups that have been floating around the web...