John Piper has written a book responding to N.T. Wright's view of justification. I think it is due out in Nov. for the ETS meetings. Here is what D.A. Carson, the evangelical pope, has to say about it:
The so-called 'New Perspective on Paul' (NPP) has stirred up enormous controversy, especially, but not exclusively, in the English-speaking world. The issues are so complex that it has taken time to mount a careful evaluation. During the last decade many have undertaken the task, often with helpful contributions. John Piper’s work may not be the last word on the subject, but it brings to Christian leaders everywhere five enormous strengths: (1) By focusing on N. T. Wright, by far the most influential writer of the NPP, Piper brings to bear a badly needed focus. (2) Despite the interlocking complexities of the debate—Tom Wright has an amazing capacity to move theological and exegetical pieces around, creating such a new tableau that words have shifted in meaning and theological notions their conceptual location—Piper has written with admirable clarity. (3) Better yet, John has engaged Tom with simultaneous depth and courtesy. That is a rare but wholly admirable combination. (4) Certain parts of John Piper’s book have quietly broken new ground—not least his handling of “righteousness” and “justification,” their connection with the “gospel,” and his careful insistence that making the words mean different things for the Judge in God’s law-court and for the defendant in that law-court really cannot be sustained in the light of Scripture. (5) John Piper sees the moral and spiritual implications of what he is seeking to explain. Are men and women saved, on the last day, on the basis of the whole life lived? But if not, what is the nature of the connection between justification and good works? The issues are not secondary, and, pastor that he is, John Piper will not allow believers to put their trust in anyone or anything other than the crucified and resurrected Savior."