I just learned about a book on Hebrews that is in the works:
Jon C. Laansma and Daniel J. Treier are editing a collection of essays: Christology and Hermeneutics: Hebrews as an Interdisciplinary Case Study. Library of New Testament Studies. London T & T Clark International. Due out: May 2012.
This is what I have been able to ascertain about the contents thus far:
D. Jeffrey Bingham - a chapter on Irenaeus and Hebrews
Mickey L. Maddox - a chapter on Luther and Hebrews? (I'm guessing)
Kelly M. Kapic, "A Theological Reading of the Book of Hebrews in the Seventeenth Century: John Owen."
Daniel J. Treier and Christopher Atwood, "The Living Word versus the Proof Text? Hebrews in Modern Systematic Theology."