It seems it does not and we are planning to use it (Logging, Exception, etc..) for future projects. Is it still supported? I do not see a lot of activity around this tool as
Yes it does. This link will provide all the neccessary details https://msdn.microsoft.com/en-us/library/dn169621.aspx
Also you can refer below sites for detailed implementations. You can install vsix version or binaries (http://www.microsoft.com/en-us/download/details.aspx?id=38789) to create configs. vsix sometimes does not work so you can modify extension.vsixmanifest as stated in below post.
http://www.gonetdotnet.info/posts/configure-and-use-enterprise-library-5-logging http://www.gonetdotnet.info/posts/how-to-configure-and-use-enterprise-library-5-0-application-blocks-using-nuget-package-manager