Luca Turin's The Secret of Scent: Adventures in Perfume and the Science of Smell is due for publication in the UK this May. Last July I posted a brief description of the book; now you can also read an excerpt at Faber & Faber or pre-order it at The Book Place (UK). Many thanks to Barry for the link! Update: see a review of The Secret of Scent.
Per Luca Turin, we can expect a US release under Harper Collins this November.