RIM is expected to announce App World on April 1st at CTIA. Mike Lazaridis is slated to give a keynote which may contain the announcement.
App World will only be taking a 20% cut from developers whereas Apple takes 30%. App World is also shaping up to be a significant consumer portal and will help RIM secure its new founded growth in the consumer market. Enterprise will also take to the App World and we can expect many small to medium sized businesses picking up applications to help with productivity.