IF TTX was smart (who says they are ?).......they wouldn't allow their usual early filing of tax returns at all until late January at the soonest.
TTX "was" going to allow early filing and storage of simple tax returns at/after the first week in January . For which millions of desperate (or type A ) people will have indicated they didn't receive any stimulus...at least, not the second one. But it's in the mail. or hasn't been electronically sent yet. It'll be a filing nightmare if TTX doesn't change that ASAP.
Best for the IRS would be to not start accepting anything until mid-Feb at the earliest....assuming the get their tax forms ready long before that.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
