Bought this, as it happens, while up in Brisbane the other weekend (from the bookshop attached to the State Library of Queensland, no less), and read a large part of it on the night flight home - an appropriate setting for reading any Murakami, and perhaps particularly this latest.
After Dark marks a bit of a different direction for Murakami - it's quite brief and has a pronounced (David) Lynch feel to it...it's also, for the most part, in the third person, a style which doesn't serve him especially well (nowhere near as well as the first person, at any rate). To be honest, I didn't find the novel (more of a novella, really) especially satisfying - it's at once too schematic and too unresolved...oh well.