Multi-tenancy (i.e. handling multiple Microsoft CRM deployments on a single server). This will be useful for different departments or divisions of the organization. Also multi-tenancy will allow software-as-a-service (SAAS) vendors to host multiple customers' applications on a single server .

Multi-language (supporting multiple languages in a single deployment).  This is useful when you have users who want their own language interface and need to share a common CRM database.

Even tighter integration with Microsoft Office 2007.