The latest iPhone 2.0 Beta contains reference to the use of the Infineon SGOLD3 chip in its baseband according to a discovery by Zibri.
The Infineon SGOLD3 chip features HSDPA Category 8 functionality (7.2 Mbit/s) as well as many other features such as support for video telephony, 5 megapixel cameras and more...
The latest iPhone 2.0 Beta contains reference to the use of the Infineon SGOLD1 also (tip of magnifying glass). OMG I hope Apple isn't about to use SGOLD1 for 3G iPhone.