I can't say I like the artwork any less than before. It's just a little different and that's why it's Apple.
There's something very asthetically(?) pleasing about all of Apple's "packaging". From their software all the way up to the stores. The software boxes are very pleasing to the eye. So much so that we put all the boxes on our bookshelves because they look better than most books. When I walk into a store, everything about it is very comforting.
Living in a "red" state, there's never a "art for arts sake" mentality. But with Apple, there seems to be. And it's nice to have it around.
I hope whenever the next major OS is released, be it 11 or whatever, they are able to come up with something as pleasing to the eye as this one. I've always loved the aqua look.