Although I've stretched the meaning of "... will follow shortly", the EXLIB is now available on our BitBucket repository at
http://www.bitbucket.org/microsabio/exlib , where you will also find additional instructions on setup and use.
As with the SOSLIB (see previous post), you can access files and track changes by setting up Mercurial on your development machine, or you can use the online tools to browse the source and changes, and download the entire thing as a ZIP.