Although there appears to have been no formal public announcement about its roll out, the DSpace-based Texas Digital Library Repository is available.
The TDL Repository contains some initial materials (mainly ETDs and Seventeenth-Century News) from three of the four founding TDL members (Texas A&M University at College Station, Texas Tech University at Lubbock, and the University of Texas at Austin; there are no materials from the University of Houston) as well as from the University of Texas at Arlington.
Using Open Journal Systems, TDL also provides access to the Journal of Digital Information, which is supported by the Texas A&M University Libraries.
The Texas Digital Library Shibboleth Federation has made progress in providing Shibboleth access to TDL for three of the four founding members (the status as of August 2007 was: Texas A&M University at College Station: fully deployed, Texas Tech University at Lubbock: agreement reached, and the University of Texas at Austin: fully deployed; there was no activity at the University of Houston). Progress was also being made for Shibboleth access for Baylor University, Texas State University, and the University of North Texas.