The Odds by Stewart O'Nan. The book is being released by Viking Adult on January 19, 2012 (yes, that's tomorrow).
Amazon says this about the book: Stewart O'Nan's thirteenth novel is another wildly original, bittersweet gem like his celebrated Last Night at the Lobster. Valentine's weekend, Art and Marion Fowler flee their Cleveland suburb for Niagara Falls, desperate to recoup their losses. Jobless, with their home approaching foreclosure and their marriage on the brink of collapse, Art and Marion liquidate their savings account and book a bridal suite at the Falls' ritziest casino for a second honeymoon. While they sightsee like tourists during the day, at night they risk it all at the roulette wheel to fix their finances-and save their marriage. A tender yet honest exploration of faith, forgiveness and last chances, The Odds is a reminder that love, like life, is always a gamble.