Seems that the powers that be over at Apple have pulled all Google Voice-enabled applications from the App Store, citing the fact that they “duplicate features that come with the iPhone”. [1. TechCrunch - http://www.techcrunch.com/2009/07/27/apple-is-growing-rotten-to-the-core-and-its-likely-atts-fault] This adds to a long list of grips I have with AT&T who is surely behind the block and in my opinion frighten of what Google Voice brings to the table. Although Google vows to "continue to work to bring our services to iPhone users" it may be sometime before it succeeds.
Even though, GV Mobile can now be found via Cydia on for jailbroken iPhone, I still wonder what the official Google Voice app from Google would have offered.
Other apps blocked from the App Store included; VoiceCentral.