The JATS-Con Proceedings collect all the papers that have been given at previous Journal Article Tag Suite Conferences. The following links take you to the Table of Contents for each year.
Presentation materials, as well as video of the presentation, are generally available for each paper.
Other Publications Related to JATS
Mark H. Needleman, NISO Z39.96-201x, JATS: Journal Article Tag Suite, Serials Review, Volume 38, Issue 3, September 2012, Pages 213-214. doi:10.1016/j.serrev.2012.08.006. (http://www.sciencedirect.com/science/article/pii/S0098791312000858 full-text requires subscription)
Jeffrey Beck, NISO Z39.96 The Journal Article Tag Suite (JATS): What Happened to the NLM DTDs? Volume 14, Issue 1, Summer 2011 [Internet]. doi:10.3998/3336451.0014.106. (http://quod.lib.umich.edu/j/jep/3336451.0014.106/--niso-z3996-the-journal-article-tag-suite-jats-what-happened?rgn=main;view=fulltext)