- Alive in Necropolis, Doug Dorst (Riverhead Hardcover)
- The Man on the Ceiling, Steve Rasnic Tem and Melanie Tem (Wizards of the Coast Discoveries)
- Pandemonium, Daryl Gregory (Del Rey)
- The Resurrectionist, Jack O’Connell (Algonquin Books)
- The Shadow Year, Jeffrey Ford (William Morrow)
- Tender Morsels, Margo Lanagan (Knopf Books for Young Readers)
I'll edit this later when I find out the results for the other categories.
Edit: Thanks to Charles Tan pointing me the way, here are the other winners. Congrats to all!
Short Story: "The Pile" by Michael Bishop (Subterranean Online, Winter 2008)
Single Author Collection: The Diving Pool, Yoko Ogawa (Picador)
Anthology: The New Uncanny, edited by Sarah Eyre and Ra Page (Comma Press)
Novella: Disquiet, Julia Leigh (Penguin/Hamish Hamilton)
Novelette: "Pride and Prometheus", John Kessel (The Magazine of Fantasy and Science Fiction, January 2008)