Five Proofs of the Existence of God will be out this Fall. You can pre-order at the Ignatius Press website and at Amazon . Here’s the book jacket description:

Five Proofs of the Existence of God provides a detailed, updated exposition and defense of five of the historically most important (but in recent years largely neglected) philosophical proofs of God's existence: the Aristotelian proof, the Neo-Platonic proof, the Augustinian proof, the Thomistic proof, and the Rationalist proof.

This book also offers a detailed treatment of each of the key divine attributes -- unity, simplicity, eternity, omnipotence, omniscience, perfect goodness, and so forth -- showing that they must be possessed by the God whose existence is demonstrated by the proofs. Finally, it answers at length all of the objections that have been leveled against these proofs.

This book offers as ambitious and complete a defense of traditional natural theology as is currently in print. Its aim is to vindicate the view of the greatest philosophers of the past -- thinkers like Aristotle, Plotinus, Augustine, Aquinas, Leibniz, and many others -- that the existence of God can be established with certainty by way of purely rational arguments. It thereby serves as a refutation both of atheism and of the fideism which gives aid and comfort to atheism .

More information here . Some endorsements:

“A watershed book… Feser has completely severed the intellectual legs upon which modern atheism had hoped to stand.” Matthew Levering, James N. and Mary D. Perry Jr. Chair of Theology, Mundelein Seminary

“Edward Feser is widely recognized as a top scholar in the history of philosophy in general, and in Thomistic and Aristotelian philosophy in particular… Feser admirably achieves his goal, and Five Proofs of the Existence of God is a must read for anyone interested in natural theology. I happily and highly recommend it.” J. P. Moreland, Distinguished Professor of Philosophy, Biola University

“Yet another fine book by Edward Feser… Feser replies to (literally) all of the objections and shows convincingly how the most popular objections (the kind one hears in Introduction to Philosophy courses) are very often completely beside the point and, even when they’re not, are ‘staggeringly feeble and overrated’… Five Proofs of the Existence of God puts the lie to the common assumption among professional philosophers that natural theology was done in forever by the likes of Hume and Kant, never to rise again.” Alfred J. Freddoso, Professor Emeritus of Philosophy, University of Notre Dame

“Refutes with devastating effect the standard objections to theistic proofs, from David Hume to the New Atheists. Feser draws on the best from both scholastic and modern analytic philosophy, including persuasive defenses of the real distinction in creatures between essence and existence, the absolute simplicity of God, and the continued importance of causation in a relativistic and quantum-mechanical world.” Robert C. Koons, Professor of Philosophy, University of Texas at Austin