Special Issue: Unfinished: Critical Approaches to David Foster Wallace's The Pale King English Studies Volume 95, Issue 1, 2014.
If you have access through a library or university to English Studies then this looks to be a fantastic issue to track down (unfortunately my NLA membership with access to thousands upon thousands of journals doesn't seem to include this one).
It's co-edited by Luc Herman and Toon Staes (he organised the Antwerp Wallace conference) and features - among other things - a number of contributions by speakers at the Antwerp conference (including the keynote speakers, Burn and Boswell). It will be circulated in print around April.
Introduction: Can The Pale King (Please) be a Novel? Luc Herman & Toon Staes
Pay Attention! David Foster Wallace and his Real Enemies. Tore Rye Andersen
Author Here: The Legal Fiction of David Foster Wallace's The Pale King. Marshall Boswell
Forms, Punch Cards and LETTERS: Self-Reference, Recursion and (Un)self-Consciousness in The Pale King's Representation of Bureaucracy. Simon de Bourcier
Subjective Politics in The Pale King. Emily J. Hogg
Work in Process: A Genesis for The Pale King. Toon Staes
Toward a General Theory of Vision in Wallace's Fiction. Stephen J. Burn
I can't wait to read these!