The official iPhone provider of the Netherlands, T-Mobile Netherlands, has posted information about the upcoming iPhone 3G S's processor and RAM. Apple has never confirmed this information, atleast in the US (for some reason), so this is some fresh info.
The iPhone 3G S will have 600 MHz CPU (up from 412MHz) and 256MB of RAM (up from 128MB of RAM). The fact that Apple made a huge deal about the speed of the iPhone 3G S (S is for Speed) at the WWDC 2009, but failed to give these exact specs, is strange. But regardless, this will certainly be a huge boost for the iPhone.