The 2009 William C. Morris Debut YA Author finalists are:
Ash, by Malinda Lo
Beautiful Creatures, by Kami Garcia and Margaret Stohl
The Everafter, by Amy Huntley
Flash Burnout, by L. K. Madigan
Hold Still, by Nina LaCour
I've read a whopping... none of them. Yeesh. Man, my reading has been so very down this year.
More info at the ALA's WCMDYAA page.