After a long delay and some initial problems, Microsoft has final fix and released the new version of SQL Server 2008 previously called "Katmai". This is quite important out of a Sharepoint perspective as well as the new features in SQL Server can only enhance the performance of MOSS and WSS.
Here is a quick breakdown of the new features and some links for more info.
Here is a list of the different versions being released:
SQL Server 2008 Enterprise. SQL Server 2008 Enterprise is a comprehensive data management and business intelligence platform that provides enterprise-class scalability, data warehousing, security, advanced analytics and reporting support for running business-critical applications. With this edition, it is possible to consolidate servers and perform large-scale online transactional processing.
SQL Server 2008 Standard. SQL Server 2008 Standard is a complete data management and business intelligence platform that provides best-in-class ease of use and manageability for running departmental applications.
SQL Server 2008 Workgroup. SQL Server 2008 Workgroup is a reliable data management and reporting platform that delivers secure, remote synchronization and management capabilities for running branch applications. This edition includes core database features and is easy to upgrade to the Standard or Enterprise edition.
SQL Server 2008 Web. SQL Server 2008 Web is designed for highly available, Internet-facing Web-serving environments running on Windows Server. SQL Server 2008 Web provides the tools necessary to support low-cost, large-scale, highly available Web applications or hosting solutions for customers.
SQL Server 2008 Developer. SQL Server 2008 Developer allows developers to build and test any type of application with SQL Server. This edition features all of the functionality of SQL Server Enterprise but is licensed only for development, test and demo use. Applications and databases developed on this edition can easily be upgraded to SQL Server 2008 Enterprise.
SQL Server 2008 Express. SQL Server 2008 Express is a free edition of SQL Server that features core database functionality including all of the new SQL Server 2008 data types, in a small footprint. This edition is ideal for learning and building desktop and small server applications, and for redistribution by ISVs.
SQL Server Compact 3.5. SQL Server Compact is a free embedded database designed for developers and is ideal for building stand-alone and occasionally connected applications for mobile devices, desktops and Web clients. SQL Server Compact runs on all Microsoft Windows platforms, including the Windows XP and Windows Vista operating systems, and on Pocket PC and smartphone devices.
The Data Platform Insider.
SQL Server MS Site