iClarified has this comparison between iOS6 and iOS7.
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I think overall the new icons are cleaner and generally look better. But as others have said the sharp gradients, weird radius on the outline edges, and few other tidbits need to be refined a bit as some icons really look out of place.
I'm thinking they have this great new compass icon, while the safari icon looks very out of place (infact the two simple triangles barely resemble a compass at all now). No reason they cant combine some of the elements of the new compass into the safari icon to keep things consistent. Just a thought.
thanks for putting that. it clearly shows that apple has done a great job to make things intuitive and consistent.
for example, stock and weather apps used to look very similar, and are usually consumed by customers at the same time (wake up in the morning). hence, there is potential for confusion. by separating their colors (changing stock from blue to black), it will speed up a person's time finding the respective app in the morning.
app store (blue) and weather (blue) do not confuse with each other, since u don't use them at the same time.
compass and stock also don't confuse, since you don't use them at the same time.
after this rule, second rule is that apple tries to keep the color same as old, so you will not get lost. (we are used to find something orange when look for music, something greenish blue when we look for video, and something pinkish purple when we look for itune. in the same way, those are maintained.
third rule, they got rid of a lot of inconsistent/odd flares like the starburst behind itune, the four ugly squares on game center, the complex graphics on newstand, photo, and safari, and simply flatten the colors into a few layers. (safari and photo all had a lot more colors to give a painting look). now, they are flattened. newstand used to show all its contents which would look kind of busy in such a small icon. now it's a pretty stash.
rule four, they organize similar things by color. mail and safari have always been blue. but they also changed colors so all the instant communication apps are green: facetime, message, and phone.
lastly, i also like how they moved the weather from "sun with a number" to "partly cloudy." the old icon doesn't convey it's weather as clearly as the second, almost universal icon. (if u look from far away, the old icon could be a yellow dot on a blue background w/ a number below. it could mean a lot of things. but the partly cloudy hiding the sun is 100% weather.)