Three conferences have preceded the Leiden 2013 one, and their proceedings have all been published. In case you want to whet your appetites, have a go at them, and come to Leiden next year for more.

• Sheffield 2003: New Approaches to the Study of Later Modern English, special issue of Historiographia Linguistica, edited by Joan C. Beal, Jane Hodson, Richard Steadman-Jones and Carol Percy  (2006).
• Ragusa 2006: Perspectives on Prescriptivism, edited by Joan C. Beal, Carmela Nocera and Massimo Sturiale (2008). Peter Lang.
• Toronto 2009:  The Languages of Nation. Attitudes and Norms, edited by Carol Percy and Mary Catherine Davidson (2012). Multilingual Matters.