No sooner did the UK announcement of Google Maps Navigation bring word that an iPhone version would follow... some day, then Google goes into disaster recovery mode and says, um, uh... maybe not:
"We did not say we would bring it to iPhone, we said to date we've had it on Android and that in the future it may come to other platforms but did not confirm this will be coming to iPhone at all."
In all fairness, it's likely far more complicated to get Google Maps Navigation on the iPhone because, while Google can do what they want on their own Android Platform, Apple builds the Maps UI on the iPhone and controls the App Store, and that means Google and Apple likely have to work together to get this done and delivered. They've done that in the past with the built-in Street View and the separate Google Mobile app, but utterly failed to do it with Latitude, for example. (Never mind the colossal cluster-frak that was Google Voice).
But none of that means Google PR shouldn't get it together. Maybe navigate over to a nice cup of coffee, hash things out, and then get back to us?