Macworld's first look at iOS 7 gives a nice feel for the big update. It's been a few days now since Apple unveiled iOS 7 and it seems like the general consensus is that this new look gives Apple a place to grow where the prior look didn't have much future. While I have no inside knowledge, I suspect getting this new look presentable in time for WWDC was Apple's own Manhatten Project and there are probably a lot of really great stories about how they pulled it off. That being said, I think they will refine it quite a bit in the early days something akin to what happened in the early days of Mac OS X. While I'm largely a fan of iOS 7, I can't stop looking at that white stuff around the new Safari icon and wonder, "what the heck is that?"