Don’t get rid of your I-9 forms just yet. The Employment Eligibility verification form I-9 is valid beyond the 06/30/09 expiration date. The current form you should be using was revised on February 2, 2009 and was effective April 1, 2009. (Rev. 02/02/09) is at the bottom of the form.
USCIS is waiting for the extension to be approved before they will issue an updated form. They have requested to continue to use the current version.