Sage has a KB page on this though it's not updated often.

2023.2 and 2022.5 were just released.

I'm expecting an IRD by year-end which will require Sage 100 2020+ and update for tax filing requirements ( 1099 and payroll )

Wayne,

I was looking the other day for information on the IRD and supported versions.  Since 2020 is not listed on the supported versions anymore, do you think the IRD will be supported for 2020?

I can't say for sure although Sage has mentioned that for 2023 tax filings users will need 2020+ so I presume that the IRD would work. 

Payroll and 1099 compatibility for Sage 100

I also do not know in what manner an update might be issued. It could be an IRD (from Sage) as has been more typical or it could be just an Aatrix-pushed update which is also very common during year-end.