French blog, NoWhereElse, has published pictures they claim belong to the upcoming iPhone 5s and an iPhone 6. They claim that the iPhone 5s will be released this summer and that the iPhone 6 will follow in early 2014.
Like most sites, NoWhereElse seems to have gotten some rumors right and messed up others completely. Like all things Apple, we'll have to wait until WWDC to see what goodies Apple has in store for us.
Personally I doubt we would see iPhone 6 parts just yet. It is more likely the parts from an iPhone 5s (next generation) and from the cheaper iPhone we have been hearing about (which would require a redesign).