With Flash: Rebirth complete, we can take a look at the changes the series made to the Flash mythos. I listed a lot of them in my review of issue #6 (resurrections, costume/identity/power changes, the re-imagining of the speed force itself, etc.), but I want to look at a specific set of changes: What the Reverse-Flash did to Barry Allen’s past, and the ripple effect from those changes.
Note that I’m specifically looking at things that contradict previous stories, not those that add new details that can be considered to have been hidden.
Spoilers for Flash: Rebirth, of course.