Concept based on the simple design of Jonathan Ive and many other concepts and rumors about iOS 7. This concept was made by a Brazilian, Rafael Justino (@rafael01justino). This concept focuses on the refurbishment of some applications which are with the outdated design of its interface.
Take a look below or check out some other great concepts here.
Apple will likely unveil iOS 7 at WWDC 2013 which was just announced.