The Wall Street Journal published an article today detailing the contents of letters sent by the Federal Communications Commission to Apple, AT&T, and Google regarding the pulling of an application that facilitates the use of Google Voice services on the iPhone.
I don't subscribe to WSJ, so I can't read the whole thing. Thankfully, CNN Money has given us the low down. One letter requests information from Apple about the nature of the application and whether or not AT&T was consulted on the matter. The inquest is part of a broader investigation into the exclusivity agreements manufacturers have with carriers.
competitive wireless marketplace, protect and empower consumers, and promote
innovation and investment." He also said that they are looking into the rural markets where customers avoid high-end devices due to carrier exclusivity.