Facebook to Replace Messages APIs Without Adding New Functionality

Facebook’s new Messages product is built on the new hBase storage system, and will therefore require a new set of Messages APIs. There won’t be added functionality in the APIs, though, and they aren’t designed to give developers new channels for communicating with users. A beta of the new read-only API will be available to registered developer accounts, but developers with existing applications can still call the old APIs until the new Messages product is rolled out to all users.