It would be INSANE if they called the iPhone 6 the iPhone 5 LOL.
Calling it iPhone 6 seems way too sensible for them, after just calling the iPad 3 the "iPad" (or "new iPad")...so yeah, I wouldn't be surprised if they call it "the new iPhone", which would at least drive me less nuts than if they call it the iPhone 5, at which point why not call it the iPhone 3, or the iPhone 2, or the iPhone 99?
I concur, you are an example of why I 'would' want it to be called the iPhone 5 !