What form or schedule?  Federal or State?  Are you using the TurboTax online web-based edition or the TurboTax desktop CD/Download editions installed on a personal computer?

What form is TurboTax saying has not been "finalized"?

You can confirm forms availability dates on this site: https://ttlc.intuit.com/community/forms/help/irs-forms-availability-table-for-turbotax-individual-pe...