When do we change the classification of a rumor and call it news! For instance, until Steve Jobs stands on a stage and holds a new gadget and says "here's the new iPhone 5" we really don't know when it will come out, or if it really is a thing yet. We often get leaked bits of information or a tip from a "close source" but not much to substantiate it to become fact!
There was a comment recently by Howard Stringer (CEO of Sony) that they were developing parts for an 8 Megapixel camera for what could only by the iPhone 5. Does this mean that it's coming out soon? Does this confirm even the existence of a future iPhone... let's see: iPhone, iPhone 3, iPhone 3GS, iPhone 4.... yes, let's name it iPhone 5!!! Brilliant!!
It is possible that Sony just decided to make an 8MP camera for Apple, just in case they wanted to look at it... but unlikely.
Apple recently stated they would be discussing operating systems at their WWDC in San Francisco this June, but they made no mention of new hardware. My bet is they will wait until late summer to unveil the iPhone 5, staggering their news!