All versions released prior to the 03/08/2013 revision are now invalid for use, only the current version expiring 03/31/2016 is valid. The revision date is located on the bottom right-hand portion of the form, the expiration dates is located on the top right-hand portion of the form.
Also, employers should be aware that using an expired form for rehire purposes is not acceptable. Any rehire that had earlier completed a now invalid form I-9 should just complete an entirely new current form.
If you are having difficulty in completing the current form or wish to discuss a particular document's eligibility for I-9 purposes, we will be happy to assist!