With iOS 7 came a hundreds of new changes, for better or for worse. One change was a new set of wallpapers, most of which actually look quite nice. If you want them, you can find the set of 33 wallpapers down below, extracted from iOS 7 itself, as JPEG images. You can also download all of them as a single ZIP file.
You can download a ZIP file that has all 33 from here (6MB).