iOS7, with a GUI designed by Jonathan Ive, is certainly a popular and well-known interface.
Ive's work is known for its slim, curved, simplistic, smooth, bright nature.
His work has certainly become a standard that cannot be ignored by designers in today's industry. However, we're all entitled to our own preferences in the area of graphic design.
On a historical basis, the new version by Ive poses very defined differences in functional and superficial practices in comparison to past versions of the mobile OS.
Does the simplistic, flat nature of the interface serve improve the functionality of the system over previous models? Does it add more decorative value than functional, or vice-versa?
Is Ive's bright, extravagant color preference a good fit for the iOS GUI?
The unique color and simplicity is accompanied by a very fluid behavior within many apps, wherein pieces can be pulled and tugged on, or slid around in a stretchy, soft manner. Do you prefer this technique over the former, rigid (not stretchy, to-the-point, exact) style of previous versions?
The icon designs themselves are an interesting topic as well. Do you have an opinon, one way or the other, of the effectiveness of the iOS7 versions of the well-known (default) application icons?
All in all, does Ive contribute notable improvement to the quality of iOS's GUI design, graphically, in comparison to past version? If you think so, what are some examples of or benchmarks for the improvement to be measured by?
What are your artistic & designer thoughts and opinions on these aspects, via iOS7?
In order to ensure that your reviews maintain an objective foundation, please accompany any opinions with citations / examples of credible, historical, or fundamental aspects of graphic design.
Edit: It's come to my realization that design "reviews" of public work such as this differ from the already shakily off-format, but on-topic "critiques" of personal works and are not appropriate for this site.