Yes, you are right, some aspects of the software are still being developed while TurboTax works with the IRS and receives guidance from them.
The IRS is reviewing implementation plans for the newly enacted American Rescue Plan Act of 2021. Additional information will be forthcoming.
The IRS strongly urges taxpayers not to file amended returns related to the new legislative provisions or take other unnecessary steps at this time. The IRS will provide taxpayers with additional guidance on those provisions that could affect their 2020 tax return, including the retroactive provision that makes the first $10,200 of 2020 unemployment benefits nontaxable.
For those who haven't filed yet, the IRS will provide worksheets for paper filers and work with software industry to update current tax software so that taxpayers can determine how to report things affected by the American Rescue Plan on their 2020 tax return.
TurboTax is developing the software required to process all of the new conditions.
Here is a TurboTax article about the American Rescue Plan
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