This is my first time posting something here.
I am going through the exact same situation right now. My wife of 8 years came out to me last week. I am confused and scared for what my future holds. We have 2 children together and I don't know what this is going to look like for them.
My wife grew up in a very tough home, with parents who were very discriminatory towards homosexuality, which helps explain why it has taken her so long to come to terms with who she is. I cannot be mad at her, I support her and he is my best friend and my person. We have talked about continuing to live together, raise our kids together, travel together, and I hope we can make something like this work out.
I know this doesn't really answer any questions or help much, but you are not alone in this.