WILL IRS ACCEPT AN OLD VERSION OF FORM 1040X WHEN AMENDING A PRIOR YEAR RETURN?

The latest version of 1040-X is from July 2021, but it says at the top, "Use this revision to amend 2019 or later tax returns."  

And thanks to indefatigable email newsletter author James Counts, CPA, in California, I learned today that IRS is out with a draft of a September 2021 version of 1040-X, and its instructions include this morsel:

Continuous-use form and instructions. Form 1040-X and its
instructions have been converted from an annual revision to
continuous use beginning in tax year 2021. Both the form and
instructions will be updated as required. For the most recent
version, go to IRS.gov/Form1040X. Section discussions and
charts that were updated annually have been removed, or
replaced with references to relevant forms, schedules,
instructions, and publications. See the forms, schedules,
instructions, and publications for the year of the tax return you
are amending for guidance on specific topics.

Does anyone know when ProSeries will incorporate the new (Revision July 2021) Form 1040-X into the tax package.  Amended returns for 2019 and later must use the amended form.  Thank you in advance.