I am in the same situation as you guys. I have been DBing for 14 months and no change in my wife's behaviour. I get the same fake good morning, fake hello when I come home from work and nothing at bed time. She did make one comment that she does recognize that I am a much nicer person and a better father since the bomb was dropped.
Like the rest of you, I am waiting for her to give my the chance to show her that I can be a better husband. My wife is a true WAW. When this started I gave myself an 18 month timeline. I am almost there and in some ways I am no better off relationship wise than I was a year ago.
Before the Bomb was dropped I got a hug for my birthday, post bomb i got a cryptic email message! As a person though, I am much better off and the new me does at least have a much better chance of reconnecting with my wife then old me who had zero chance.