The bullshit is not the quad core the bullshit is to claim it's based on Samsung's Exynos 4 architecture.
And btw Apple has now 4 designes:
A4 (45nm / Cortex-A8)
A5 (45nm / Cortex-A9)
A5X (45nm / Cortex-A9)
A5 (32nm / Cortex-A9)
and none of them is based on any Samsung design.
Personally I think we will see a dual Cortex-A15 design in the next iPhone.
It's questionable though whether Apple was able to already incorporate a G6x00 (PowerVR...