President Biden signed it 5 hours ago.  Any update on at least a timeframe of when the software will be updated?

My understanding is that first the IRS has to set their programming so the E-File system accepts it, then Intuit and the other providers have to reprogram their software to apply the law and any resulting consequences.

I'm guessing a Minimum of 1 Week, but more likely, 10 days, so perhaps around Tuesday March 23.

It's OK, not like I have any lower income clients who received Unemployment Benefits last year.  I guess the IRS's little game of "No Way, We Won't Delay," comes to an end next week.  Otherwise I foresee plenty of chaos over the next 5 weeks.