I can't believe I can't find any info on this and no tear downs have mentioned it at all. In pictures of the PCB, the chip is clearly different than on the 3G model, rectangle vs square and now branded with the word "APPLE" on it (before it was a shiny silver square). Does anyone know if the 3GS is now using the new Infineon 65nm Xposys chip, or is it still the same last gen Hammerhead II GPS chip that is in the 3G?