The February issue of Locus (the SF and fantasy trade magazine) includes its review of 2008 and recommended reading list. Here are the recommended YA books, in alphabetical order by author:
City of Ashes, Cassandra Clare
The Hunger Games, Suzanne Collins
Monster Blood Tattoo, Book Two: Lamplighter, D.M. Cornish
Little Brother, Cory Doctorow
The Graveyard Book, Neil Gaiman
Eon: Dragoneye Reborn (aka The Two Pearls of Wisdom), Alison Goodman
Tender Morsels, Margo Lanagan
How to Ditch Your Fairy, Justine Larbalestier
Ink Exchange, Melissa Marr
Chalice, Robin McKinley
The Knife of Never Letting Go, Patrick Ness
The Adoration of Jenna Fox, Mary E. Pearson
Nation, Terry Pratchett
Zoe's Tale, John Scalzi
Flora's Dare, Ysabeau S. Wilce
City of Ashes, Cassandra Clare
The Hunger Games, Suzanne Collins
Monster Blood Tattoo, Book Two: Lamplighter, D.M. Cornish
Little Brother, Cory Doctorow
The Graveyard Book, Neil Gaiman
Eon: Dragoneye Reborn (aka The Two Pearls of Wisdom), Alison Goodman
Tender Morsels, Margo Lanagan
How to Ditch Your Fairy, Justine Larbalestier
Ink Exchange, Melissa Marr
Chalice, Robin McKinley
The Knife of Never Letting Go, Patrick Ness
The Adoration of Jenna Fox, Mary E. Pearson
Nation, Terry Pratchett
Zoe's Tale, John Scalzi
Flora's Dare, Ysabeau S. Wilce