MOSS 2007=> MSS 2010
The next version of Microsoft Office SharePoint Server 2007 will be Microsoft SharePoint Server 2010
What is SharePoint 2010?
SharePoint 2010 is the business collaboration platform for the Enterprise & the Web that enables you to connect & empower people through an integrated set of rich features. Whether deployed on-premises or as hosted services, SharePoint 2010 helps you cut costs with a unified infrastructure while allowing you to rapidly respond to your business needs.[Microsoft].
Please visit the following URL for more information on SharePoint 2010