Intel has announced details of their UMP processors, A100 and A110. This is why they sold off the ARM subsidiary. Could these be potential iPhone processors? I suspect maybe the next generation will be more interesting but here are the details as reported by the Reg:
http://www.reghardware.co.uk/2007/04/18/intel_intros_ump/
http://www.reghardware.co.uk/2007/04/18/intel_intros_ump/