Open a Design file and choose Version history from its action menu to see saved versions of the Main Design. Editors can name the current version, and people who manage the file can restore an earlier one after confirming. If the Design changed after you opened the history, the app asks you to review the latest versions first.
Version History and Branches in the Design editor on the web showed the name of the person who saved each version or branch in place of the version or branch name. They now show the name it was given, or its type, such as Checkpoint.