Berghahn Books has recently released an edited collection titled Centering the Margin: Agency and Narrative in Southeast Asian Borderlands (thanks to David for the tip!).
Edited by Alexander Horstmann (page in German) and Reed Wadley, the book’s promotional material argues that its “completely new approach to borders and border crossing…suggests a re-conceptualization of the nation in Southeast Asia.”
While I have not found a full list, its contributors apparently include “anthropologists from Europe, the USA, Japan and Southeast Asia”. For the many students and scholars working on Southeast Asian border topics, I reckon this volume may be worth a look. When Andrew or I track down a copy no doubt one of us will post some more detailed thoughts.