Here are a few more specs released:
According to the guys over at
AnandTech, the iPhone 3GS uses a 32-bit ARM Cortex A8 RISC processor which is the same processor that is used in the
Palm Pre.
The 3GS also features an improved graphics processor in the form of a PowerVR SGX 520, we wont know until the launch of the 3GS what the exact specifications are, and what other components have been upgraded over the 3G.