Used on http://drupal.org, "This module stores the changes of a node into a field attached to comments allowing to display a kind-of activity stream on the node much like on drupal.org issues just with a lot less custom code."

Schedule a time when a particular revision should go live.

"The workflow module allows the creation and assignment of arbitrary workflows to Drupal node types. Workflows are made up of workflow states. For example, a workflow with the states Draft, Review, and Published could be assigned to the Story node type."

Assign roles to have permissions to do revisioning related activities. ie: "Revisioning allows you to assign distinct permissions for authors (to only create and edit content) and moderator roles (to review, publish, revert, unpublish and optionally delete content)."