Where's the provenance certificate stating that it was actually shot at Mavericks Beach? This being Apple it might have been taken in China. (The Developer link here links to a file titled osx_hero - a considered alternate name?)
Hm... maybe they should also mention "68K" under requirements?
Besides that: Apple's OSs have always been kind of elegant and stylish to me. But in my eyes the new 'colorful' appearance of 10.9 and iOS7 does not fit, somehow.