MacRumors spotted Apple is finally allowing 3rd party developers to sell web browsing application through the App Store:
Over the past 24 hours, Apple has begun to approve 3rd party web browsing applications for the iPhone. A number of new web browsing apps have suddenly appeared with original submission dates ranging as far back as October.
While Apple has made no official acknowledgements, it appears these applications were likely in a special queue awaiting for approval. We had seen a similar "group" delays with other categories of apps. The most notable example involved flatulence applications such as Pull My Finger and iFart Mobile. Once Apple decided to allow the category within the App Store, a backlog of apps quickly appeared.
Web browsing applications were previously charged with "duplicating functionality" of other iPhone apps and was felt to be the reason why Opera would never be approved by Apple.