Anticipation and excitement around Service Pack 1 for WSS 3.0 and Office SharePoint Server 2007 has been building, and I'm excited to share some information on the upcoming service packs. There are truly gifts for everyone in Windows SharePoint Services (WSS) 3.0 SP1 and Microsoft Office SharePoint Server 2007 SP1. From developers getting excited about AJAX support and compatibility to IT Pro's being excited about the new STSADM commands allowing them to repartition their databases not to mention the new performance, manageability, and security enhancements in Windows Server 2008 and IIS 7. (Which easily promises to be best server OS release ever.) Even information workers are well served with a number of hotfixes across the SharePoint Products and Technologies addressing issues related to workflows, alerts, and list views.
More in the officiel SharePoint blog : http://blogs.msdn.com/sharepoint/archive/2007/11/29/preview-into-wss-3-0-sp1-and-sharepoint-server-2007-sp1.aspx