System Center Essentials 2007, AKA SCE has RTM'ed.
The English version is currently available for evaluation via http://www.microsoft.com/technet/sce/2007/evaluate/default.mspx with other languages releasing over the coming months.
See the following site for Essentials Self-help resources http://www.microsoft.com/technet/sce/selfhelp.mspx , particularly the SCE Support Forum on http://forums.microsoft.com/TechNet/ShowForum.aspx?ForumID=1558&SiteID=17
Find out more about Essentials in the Overview Whitepaper http://go.microsoft.com/fwlink/?LinkID=89185
See a demo of Essentials http://www.microsoft.com/systemcenter/sce/demo/index.html
Download the datasheet for more information on what Essentials provides http://go.microsoft.com/fwlink/?LinkID=89184
Or just visit the hhomepage at http://www.microsoft.com/systemcenter/sce