No what? There's no reason for them not to use the quad-core A6.Yeah, no. I expect the next iPhone to basically be a 'iPhone 4GS'.
Case redesign, maybe a larger screen. But basically a 32nm A5, DC 1Ghz, 543MP2, 1GB of RAM with LTE.
EDIT: Even without the A6 though, that's still enough improvement to warrant being called the iPhone 5.