Sounds like a big step to me COD; like you've turned a corner in your Acceptance which will make it easier to be able to Let Go fully, IMO.
Is there a reason that you haven't considered a separation even if you aren't quite ready for divorce? (I'm just thinking that for some, it can be easier to baby-step from married to separated to divorce. I don't really remember you ever talking about it, but I'm getting the feeling that for you it's more black/white - either you're married OR divorced, not interested in middle ground?