@PATAX @Just-Lisa-Now- 

The returns with unemployment -- did they claim the exclusion, or were they filed before the program update?

And I have to admit I forgot that the program was automatically updating the exclusion after the return was final, so I have been checking the status of one refund with the wrong amount.  Fortunately the client had the right amount, and is supposed to get the bank deposit tomorrow.  It is $20 and some change less than expected, which I believe is a combination of two adjustments:  Interest paid to them on the 2020 refund, and interest charged on the 2019 balance due.  The 2019 return was filed in October with a payment that included some interest but no FTP penalty.  No notice has been issued, but this may be one of the 2019 returns that IRS just finished processing.  

Come to think of it, that might be one of the questions to ask others about 2020 delayed refunds.  Did they owe for 2019, and have they received any notices asking for interest or FTP penalty?

And for others here, make sure you point out to clients that it's great to be earning 3% interest on a short-term government obligation.  If that doesn't enrage them, it might make them feel better.