Cheaper iPhone Plans from AT&T?

So many rumors, it must be true, right? BusinessWeek reports that AT&T is considering introducing a discounted limited data plan for the iPhone at $20 per month. AT&T currently offers only an unlimited data plan for $30 per month, and the data transfer cap for the rumored discounted plan remains unknown.

Analyst Richard Doherty claims that the additional data plan option is being driven by Apple, which wants to offer a lower-cost entry point for the iPhone. AT&T, which is reportedly still trying to lock up an extension to its exclusivity agreement for the iPhone, is also looking for ways to continue to increase its subscriber base.

The report also touches on rumors of a price drop for the next-generation as component prices continue to decline and AT&T considers offering the entry-level iPhone for $99 instead of the current $199. A prepaid iPhone is also reportedly under consideration.