iTunes Radio?

Engadget has come across something of interest on AT&T's website. AT&T has just added an international data plan (to ease the $3000 phone bills one would imagine), but they use iTunes Radio as an example of usage. AT&T claims that 20 minutes of listening to iTunes Radio uses up 20MB of your data plan. Very interesting considering that iTunes Radio doesn't exist. Might this be a new feature in the rumored iTunes 7.5?

Update: Before 15 more people point out the Radio option in the desktop iTunes, yes I am aware of that. Nowhere is that functionality called 'iTunes Radio,' though, and it doesn't interact with the iPhone.