Our paper "Network Analysis for Wikipedia" has been accepted for Wikimania 2005, to be held in Frankfurt this summer. We will publish the final version of the paper on the conference wiki.
We also plan to publicly release all the dataset resulting from out web- and text-mining work on the English-language Wikipedia corpus, in order to make it available to other people willing to experiment on it. We will use a creative-commons license, and we are considering to host it on SourceForge, since the link network graph is a few hundred megabytes in size.

See also: out previous work on Wikipedia analysis, and the final version of the Wikimania work.