Not yet. When you do submit early and find that you need to make a change, you will have to
wait until the IRS either accepts or rejects the return. If the return is
rejected by the IRS, then you can make the necessary changes and resubmit it.
If the return is accepted, then the only way to change it is to prepare an amended
return and file it by mail.
Please see the following TurboTax FAQ for more information about amending a return.
https://ttlc.intuit.com/replies/3318732
