trephawk: The Form 8453S, in case you're not aware, is the signature page that the IRS requires e-filers to submit. When it becomes available in TTax (which it looks like should be on 1/28) you print a copy, sign and date it, then either scan or take a photo of it and upload the signed form into TTax. TTax will attach it to your 1120S and you should be able to e-file at that point if everything else is good. Hope that helps...
