Author of AdaptiveSoftwareDevelopment, another people-centric ultralight methodology. Also AgileSoftwareDevelopmentEcosystems.
Jim has written about XP in the CutterConsortium newsletter an/or the eAD journal. A copy is available online at http://www.cutter.com/ead/ead0002.html.
Will be at Leadership Summit - Summer 2006
See also: HighsmithAndCockburn