Calls for Papers: World Library and Information Congress : 77th IFLA General Conference and Assembly 13-18 August 2011, San Juan, Puerto Rico
You should visit the main site as well but I linked directly to the call for papers listing. Some 15 of 16 calls for the main conference are still open and there are calls for satellite meeting papers as well.
Proceedings from prior conferences are available (at least the two that I checked) and I will include links to those in an upcoming post.