There is always hope, and though few alcoholics are able to reach long-term sobriety, there are plenty who do. Praying that your husband is one of the lucky few. You both deserve happy, healthy lives. I agree with Prodigal's suggestion of learning all you can about alcoholism and codependency and joining a support group of some sort. Arm yourself with the knowledge and support you'll need to get through this challenging transition and just every day life with an addict.
Welcome to the forum. Glad to see another dog and book lover here.