On November 30, 2007, the Exchange Server 2007 service pack 1 will be ready for download on the Microsoft website.
The Service Pack is much awaited by the Exchange Server community and customers alike, with the long list of new features that the service pack promises. The new features include new deployment options, new features and improvements for each server role, improved integration with other applications, and even a new, third type of continuous replication.
If I were to mention each of the new features, this would become a really long, long, blog post. I encourage you to view the list on the Technet website.