Following severe criticism and a furore following Apple pulling over 5000 "overtly sexual" apps from the iPhone and iPod touch App Store it seems that Apple is attempting to right a wrong.
It has been revealed that a new category is available for Apps but not yet visible to the public. The category available to developers submitting Apps is labelled "Explicit" which has since been removed.
The addition suggests that Apple could wish to add Apps to the store which are beyond a 17+ rating.