Here is a list of all the new actions in SharePoint 2010 / Designer 2010:
SharePoint Foundation:
- Pause until date
- Send Document to Repository
- Add/remove/replace/inherit list item permissions
- Find interval between dates
- Extract substring from (end, index, index with length) string
- Error Message
- Persist on Close Activity
- Set workflow status
SharePoint Server:
- Assign item for feedback
- Assign item for approval
- Send Document Set to repository
- Set conten approval set for document set
- Capture a version of the document set
- Lookup manager of user
- Append Task
- Reqeust a change
- Delegate task
- Escalate task
- Forward task
- Insert task
- reassign task
- rescind task
- wait for item changed
- wait for item deleted
- declare record
- undeclare record
- delete previous versions
Enjoy,
Chris