Intuit sent out in-product notices; the IRS provided notices, two threads were posted here, yesterday, discussing it  .....

E-filing is closed, and has been since November.  The IRS closes the MeF system down e.v.e.r.y. year to retool for the upcoming filing season. It usually re-opens in mid-to-late January.

The IRS *just* announced that re-opening will not happen until Feb 12, 2021 due to the last minute tax law changes.

I suggest you go to irs.gov & sign up for their free Alerts so you'll be one of the first to know when/if this date gets pushed back even further.

https://www.irs.gov/e-file-providers/quickalerts-more-e-file-benefits-for-tax-professionals