Yesterday, TUAW reported Ifbyphone’s plans to release a “Voice Broadcast” app through iPhone’s App Store in June. The application will apparently allow you to transmit voice messages to multiple recipients; essentially enabling iPhone users to send recorded messages to as many recipients as they wish without using their calling plan minutes.

Voice Broadcast will work by selecting a group of recipients from the iPhone’s Address Book, then entering the delivery date and time. The Voice Broadcast application lets you record a message, which is then sent at the appointed time. Because the message is being sent as data, it doesn’t impact the number of minutes you’ve selected in your calling plan. This could be quite a handy tool for teachers and students collaborating in mobile learning endeavors.

However, as TUAW asserts with a week to go before WWDC, a great deal of uncertainty still surrounds the process of the iPhone app store. TUAW asks the compelling question, “What if someone releases a VOIP app through Apple’s official store? What would AT&T have to say about that?” It’s conceivable that conflict my surface if a developer delivers functionality that intersects with Apple or AT&T’s profitability.