This book just released (a few weeks ahead of schedule):

Denny Burk. What Is the Meaning of Sex? Wheaton: Crossway, 2013.

My endorsement:

Clear writing, thoughtful arguments, wise positions, courageous counter-cultural stand. I learned some things I didn’t know (e.g., the intersex discussion) and honed what I did. Denny is a skilled Bible-interpreter and shrewd critic of politics and culture.