Well, as many people here that would call BS, I say it makes sense. Like you said, the phones wouldn't just BE THERE dropped in your face on launch day, knowing absolutley nothing about new features and so on.
Yes or No question for you then. 3.2mp/5mp camera in the next one?
I can't give you the specs but read between the line. 2 Versions + Prototypes.
The camera quality isnt much better than what we have now but still better. I hope that somewhat answers your question.