http://www.codeplex.com/entlib/Release/ProjectReleases.aspx?ReleaseId=2081
February 2007 CTP of Enterprise Library 3.0. Includes a preview of the new Policy Injection Application Block, and release candidate of all other application blocks. More details are in the included documentation and release notes. See the "Known Issues" document linked from the Home page for late-breaking issues.
patterns & practices: Enterprise Library Blogs
http://msdn.microsoft.com/practices/comm/entlibblogs/default.aspx