The IRS has created a new form for retirement plan withdrawals (Use for Coronavirus-Related Distributions). The form is a 8915-E and has not been finalized by the IRS. When the IRS finalizes the form/instructions and then approves the TurboTax software form and instructions it will be available in TurboTax.
IRS Form 8915-E, Qualified 2020 Disaster Retirement Plan Distributions and Repayments (Use for Coronavirus-Related Distributions) (Draft) - https://www.irs.gov/pub/irs-dft/f8915e--dft.pdf
IRS Form 8915-E, Qualified 2020 Disaster Retirement Plan Distributions and Repayments (Use for Coronavirus-Related Distributions) (Draft) instructions - https://www.irs.gov/pub/irs-dft/i8915e--dft.pdf
