This chunk of code dug out of iPhone 2.x Firmware is the first indication that a new generation of iPhones is on the way. In particular, look at the very first line — and keep in mind that the first iPhones were tagged as "iPhone1,1", while the current 3G models are "iPhone1,2".
This is significant because history has shown the first of the two numbers represents a major hardware upgrade. Proof: the latest iPod Touch (which also had the "2,1" firmware indicator) added niceties like a speaker, volume controls, microphone support and a much faster processor.
This ties in to earlier-reported rumors that Multi-Core CPUs (and possibly Multi-Core GPUs) from Imagination Technologies would be part of the next major iPhone upgrade.