The Graveyard Book, by Neil Gaiman (Hugo voter packet)
A young boy is brought up by the dead inhabitants of a graveyard after his parents are murdered.
Saturn's Children, by Charles Stross (Hugo voter packet)
A robot built as a sexual companion for humans navigates plots, sub-plots and counterplots in a high-stakes game to control what remains of civilization after the death of the last human.
Victory of Eagles, by Naomi Novik
The adventures of Temeraire and Laurence continue as Napoleon invades England. Dragon emancipation enters into the equation as Laurence deals with the fallout of his prior treason that saved dragonkind.