Apple prepares to reset the bar in the mobile app market.

Apple's plan to allow developers to add in-app payments to applications sold through its iPhone App Store could be the next game-changing step the company takes as it charges ahead in the mobile market.

Apple announced the new feature at the iPhone OS 3.0 preview event in March. And next week at the Worldwide Developers Conference in San Francisco the company is expected to announce the release dates for the software upgrade. C-Net News