In a series changelog, you can look back on the history of a series to see who made changes, when they were made, and any new blocks added in the most recent change.

Note: The changelog will only show edits made after July 20th, 2021.

To view the changelog for a series, click "Changelog" under the "More" menu:

And you'll see a list of all previous edits, showing the time, date and editor:

Note: Changelogs don't currently specify all the changes that were made in each edit.

If the most recent change was by a teammate other than yourself, and included adding new blocks, you'll see those blocks highlighted in the Series preview:

You can toggle this highlight on and off next to the zoom controls:

For a more detailed look at different versions of the messages in a series, read this article about message version history.