Apple and Pepsi may be planning a new iTunes co-promotion next year, AdWeek suggests.

A report there claims Apple's advertising agency TCBWA/Chiat/Day will be in charge of the task five months after the previous promotion, launched at this year's SuperBowl, yielded lower-than-anticipated results.

It appears that Apple's agency has taken the assignment away from Pepsi's favoured advertising agancy, BBDO. The task's estimated value is $15-20 million and Apple's agency took the contract "without review" because Apple CEO Steve Jobs wanted more say in how the promotion is handled.

AdWeek could provide no confirmation from either advertising agency, Apple or Pepsi.