USCIS Will never publish a Depart of State form (DS) That form is still valid.
If you are referring to a OMB date, you can continue using the form, it is a date that Office of Management and Budget specifies that suggested changes and auditing by the various departments needs to be completed by, in this case Department of State. OMB date is an internal audit date, not an expiration of the form.
The various consulates use and mail out forms that are much older than that.
So no problems using that form.
SEE:
http://www.reginfo.gov/public/do/PRAOMBHis...umber=1405-0015