In 2001, the Institute of Museum and Library Services (IMLS) published A Framework of Guidance for Building Good Digital Collections. Since then, NISO sponsored an updated version, which was completed in 2004. The new version includes three brief case studies.
lbarnhart's posting on Diglet noted that it was unknown what the differences were between the two versions. Indeed, it would have been nice if NISO had release a document that talked about why the update was done and what is different.
Since many people know about the original Framework, IMLS has instituted an automatic forward on its site, so that you are automatically taken to the new version. Nice, but does this mean that no one should ever even read the previous version as a way of finding out what has changed?
BTW looking at the NISO homepage, one would not even guess that this Framework document was there. It seems to be a hidden gem on the NISO site.