Our decision to enter into the area of tool development stemmed from our own need as TEI users. We began the TEIViewer project during spring 2007, shortly before attending the Digital Humanities Summer Institute in June 2007, and we presented the prototype of the TEIViewer at the TEI@20 Conference at College Park, Maryland during early November 2007.
The beta version is being released during the TEI Members Meeting at King’s College in London in November 2008. And a customized version of the TEIViewer has been implemented in a digital edition of Hafgeirs saga Flateyings (see “The TEI as Luminol: Forensic Philology in a Digital Age” forthcoming in Literary and Linguistic Computing).
We view the development of the TEIViewer as an ongoing, long-term project. We expect to continue to enhance and refine the tool. You can find information about the latest developments at http://updates.teiviewer.org.