A recent story on the Society for Human Resource Management website reports that a new version of the I-9 form may be released next year - but that nobody could agree on exactly when that might be.
There are two versions of the I-9 form which employers should be using: the current version (Rev. 08/07/2009) or the previous version (Rev. 02/02/2009).
Keep in mind that even if your company uses E-Verify, either voluntarily or in you're in a state which mandates it's use, you are still required to complete an I-9 form for every new hire and retain the information as you would have before your company began using E-Verify.
You can get info on the current I-9 form online - and presumably keep a watch for updates there as well - at the U.S. CIS website.