N. T. Wright has recently published a new book on the atonement, The Day the Revolution Began: Reconsidering Crucifixion. The link will take you to an interview of Wright by Luke Norsworthy, senior minister of the Westover Hills Church in Austin.
If you’re interested in an excellent summary of the book or atonement theology in general, it’s a fascinating interview and well worth your time. I’ve bought my copy of the book and am about halfway through. Very insightful.