As you may already know, iOS 7, the latest major upgrade to the iOS operating system was announced last week at the WWDC 2013 keynote along with the Mac OS X Mavericks (10.9), the new Mac Pro, iWork for iCloud and a new Macbook Air lineup.
iOS 7 is, as Apple says, the biggest change to iOS since the iPhone. And rightly so. Everything about the operating system has been completely redesigned, removing all instances of skeuomorphism (elements of the OS which attempted to depict real life elements) such as the yellow legal pad design of the inbuilt Notes app, etc)
Following its usual pattern, Apple has, unfortunately, not been made iOS 7 available to the public as yet, but only to Apple developers for beta testing to find and fix bugs that may be present in the OS.
As of right now, the developer beta version is only for iPhone, not iPad.
Here is a massive collection of iOS 7 screenshots on an iPhone 5, showing the new designs of various applications and the finer aspects of the OS.
(Click on an image to enlarge)
User Interface
Compass
Clock
App Store
Settings & Sharing
Maps & Videos
Notes & Newstand
Calculator & Control Centre
Safari & Reader
Photos
Notifications
Siri
Calendar & Phone