It's with great excitement that we can now refer to the next version of SPS as Microsoft Office SharePoint Server 2007! I'm quite sure that this will probably be referred to as Office SharePoint Server (OSS).
Office SharePoint Server 2007 will unify portal and content management, business insight and business process capabilities to help organizations collaborate more effectively, make more-informed decisions and control content. In addition, Office SharePoint Server 2007 will give IT professionals the tools they need for server administration, application extensibility and interoperability.
For more information on the announcement go here