Entries begin on January 23rd and you can enter until February 5th unless they reach 5000 entries by that date.
See the official rules at www.amazon.com/abna, but basically it's a book between 50,000 and 150,000 words that has not been previously published. Self-published is OK if you have all the rights.
Submit your entry at www.CreateSpace.com/abna.
I'm going to submit Beauty Syndrome.