Since 7.x-1.0
Performance improvements.
Major restructure of admin UI.
Workflow form detached from comment form.
Workflow status and form are fields that can be controlled under "Manage display."
NEW in 7.x-1.1
The 7.x Workflow_Admin_UI module has been greatly overhauled. The old, hugely complex page is broken into into smaller parts that are separately viewable. The states for a workflow are now in a drag-and-drop table, which makes reorganizing the states much easier. Additionally, there is a new permission, "participate in workflow," which allows you to limit which roles to show on the workflow edit screen, thereby simplifying it even more.
If you are upgrading from Drupal 6 to Drupal 7 versions of Workflow, please be aware that many features of the module have been broken out into sub modules that you will need to activate. There is an UPDATE.txt file in Workflow, please read it.
A new Workflow_Cleanup module was created in response to #1347116: States don't get removed when a workflow is deleted. Use it with caution (as in back up your database).
The Workflow_Search_API module adds the workflow state name to the entity so it is available in search_api as a facet and field.
There was VBO support in the workflow_actions module but people didn't want to enable that module just to get VBO. So now, the VBO functions have been pulled out into their own module.
#1997242: ask other modules for permission in node forms has introduced a new operation for hook_workflow(). It is "transition permitted" and gives your module a chance to remove potential transitions from the list that is presented to the user. As an example of how to use it, we only allow members of the author's group to transition nodes.