Westminster Into the 21st Century is a project headed up by Ligion Duncan III which will be a four volume set from modern theologians which show the relevancy of the Confession. The title is a bit deceiving since it also has articles concerning the Shorter Catechism, Larger Catechism, and some doctrines which are debatable yet confessional.
Some of the debatable articles include topics such as the Eschatology of the Assembly, The Scot's view of Establishment, and even one on the term "psalms, hymns, and spiritual songs'.
There are two of the four volumes that are available at this time. I got my copy of volume two on Tuesday and by Tuesday evening my pastor had me convinced that he needed to borrow it for the article on the theology of the Larger Catechism!