I have gotten past the research phase of my latest book and have started in on making the outline for the whole thing. This is probably the most important phase of writing the book, because the outline is the backbone of the finished product. I have never heard of a writer who stayed wholly on the outline, but many make only small edits from that document.
As for me, I take the outline as a suggestion instead of the gospel and make plenty of edits as I go along.
Whatever your method, have a great day outlining your next book!