As of Forms version 11, I see that users task variables exist for Start Date and Start Time, but I would also like to have variables for Completion Date and Completion Time.  This information will be valuable when notifying users of the completion of a task as I have several department managers who need to know how long it takes for certain user tasks to be completed, and they don't want to get separate reports for this information.  They want to see this information in the notification emails that go out after the forms process has been completed.

Example:

VP Approval:  Completed on {/dataset/_completion_date[@_step_id=4]} at {/dataset/_completion_time[@_step_id=4]}

CEO Approval: Completed on {/dataset/_completion_date[@_step_id=6]} at {/dataset/_completion_time[@_step_id=6]}