In this month's issue of Christianity Today, there are two brief but important articles on the ongoing debate about justification between John Piper and N.T. Wright. One is "The Justification Debate: A Primer," which summarizes the main arguments of Piper and Wright. The other is "Not An Academic Question" by Trevin Wax and Ted Olsen, which reveals the thoughts and experiences of several different pastors and how the justification debate affects their ministry.
Since this is the current issue of CT, the articles are not yet available online. However, I would encourage you to find a copy and read them. The cover story, about Tim Keller, is interesting as well.