Apple's being pretty cagey with the hard specs of the iPhone 3G S, but apparently T-Mobile Netherlands didn't get the message -- it's just posted up a specs page listing 256MB of RAM and a 600MHz CPU. That's up from 128MB and 412MHz in the first-gen and the 3G, and it's basically exactly what was rumored
. Of course, the 3G S also has that new PowerVR SGX graphics chip
that supports OpenGL ES 2.0, so the total speed boost is probably more than just pure clock speed, but we'll find out for sure when we get our hands on one.