I'm not so sure this is a good idea. It can work both ways. California has that cool vibe through Hollywood, etc. But it also means "American". What happens when America isn't so popular? Sales will dip. They should keep it more universal so it appeals to everyone wherever you are around the world.
I don't see why they needed to change anyway. The iPod ads won universal praise. The iPad ads have always been excellent. I think Apple's best ads are the ones with no voiceover - it's just the product, upbeat music and words on the screen. Ditch the stupid "it makes you feel" voiceover nonsense. We can all see when someone is happy, contented, in love, enjoying their music, etc.
I'm really not liking some of the changes Cook is making.