iPad A4 == Intrinsity?

Wow, here's a flash, maybe Apple didn't design the "A4" brain of their iPad tablet after all: IEEE Spectrum: Evidence for Intrinsity in the iPad.

I always thought it curious that Apple supposedly pulled off such an ambitious chip with their first major in-house development. Pundits assumed that it was done with the help of Apple's P.A. Semi acquisition, but P.A. Semi had been focusing on the "Power" architecture, not ARM.