Document Manager within CRM

Are you going to be adding a document manager to the CRM system. I see a need to place sales documents, marketing collateral in a central place. I suggest that an extra tab be set up for this. Rights will also need to be incorporated to this to limit accessability etc. This is very important to us as I want to extend the use of the system to partners etc. (Beginning stage for PRM functionality which is what I really need). When would this feature be added?