iTunes Radio?

If you’ve been paying attention, you know I like the idea of subscription-based content services – specifically, movie rentals and all-you-can-eat music. And here we were with another rumor that Apple could be moving in this direction. According to updated AT&T iPhone data plan documentation:

Consider that just 20 minutes of iTunes radio takes 20MB of data.

So is someone at AT&T confused about iTunes WiFi store purchases, will Apple allow Internet radio streaming (as seen in iTunes) to the iPhone, or does Apple have an entirely new service in the works? The blogosphere feeds on speculation, so I may as well also point out an updated desktop iTunes client (v7.5) is due any day…