Bright Side of News reports a job listing suggests Apple may be working on an ARM-based System-on-Chip (SoC):
We just looked at Apple’s job listing site and encountered an interesting position for currently fabless, non-silicon manufacturing company: a low-level programmer for ARM Cortex 10 architecture... given that we already saw Cortex architecture and its preferred placing [SoC designs], no wonder that Apple wants to explore that route as well. We're not saying Apple is making SOC chip, but this hiring spree leaves little to be guessed - we all saw too many hirings that came to life, that being Intel Larrabee, nVidia Tegra or similar enterprises.
The programmers needed will belong to Vector & Numerics team, charged with "designing, enhancing and improving various subsystems running on iPhone OS". Given the fact that this ARM-oriented programmer should have "additional Intel SSE or PowerPC AltiVec" knowledge... read between the lines, folks. Apple probably wants to take a piece of nVidia's pie, given the recent success of Tegra and the alleged specifications of next-gen Tegra stuff.