Other than e4 Repertoire books, which would have the Caro-Kann within it, probably the only one that's objective and not highly dated is "Grandmaster Secrets: The Caro-Kann" by Peter Wells.
Of course, if you go to www.qualitychess.co.uk, and look at their publishing schedule, they have a 4-book, highly theoretical repertoire coming out on 1.e4, but the one that has the Caro-Kann will be a while. They also have a more manageable "Grandmaster Guide" series (2-books) on 1.e4. One of them will be Sicilian and French. The other 1...e5, Caro-Kann, and others. Both I believe are supposed to be out in 2013.
Does someone know a good book for white against the caro-kann?