I sure hope he keeps writing. Possessed by God in the NSBT (New Studies in Biblical Theology) is a favorite of mine. A great read on sanctification. See more of his works at IVP.
And if you have time, this is not to be missed, his online lectures at Oak Hill: "Creation to New Creation: An Introduction to Biblical Theology"
Anglicanism needs more and more biblical theologians of his ilk.
Best wishes for your next endeavors in Sydney.