State tax filing

Are you asking about Federal or State?  That link you posted doesn't work.  

The IRS won't open filing until Feb 12, 2021 this year
https://www.irs.gov/newsroom/2021-tax-filing-season-begins-feb-12-irs-outlines-steps-to-speed-refund...


The IRS has not updated all the forms yet. See
https://ttlc.intuit.com/community/forms/help/irs-forms-availability-table-for-turbotax-individual-pe...