Most people probably assumed that it includes the full iTunes store catalog on demand, but as pointed out by some here they are calling the streaming catalog Apple Music. There are definitely some artists who are opposed to streaming, so it would make sense that they would be able to offer a big streaming catalog but not the full catalog they have for sale.
Some confirmation or denial from Apple would be helpful about whether it's the full iTunes catalog or not. That makes a huge difference in the appeal of the service.
Some confirmation or denial from Apple would be helpful about whether it's the full iTunes catalog or not. That makes a huge difference in the appeal of the service.