8915b form

I have not been able to file my 2020 tax return because Turbo tax tells me the final form has not been published by the IRS. When I look on the IRS website, I am able to see what looks like a final form. Why is there a discrepancy between Turbo tax and IRS?

Also, Turbo tax has two 8915 forms, one is 8915B-T and another 8915B-S. The one showing partially completed for me is 8915B-T. What's the purpose then of 8915B-S? 

Should I delete 8915B-T and try to complete 8915B-S?

 

Thank you