I checked the IRS Payment site for the stimulus for DF's account.
And got the "Status not available" message for the 2nd stimulus. Got the correct info for the first stimulus. From what I read this means it's reconciled via his 2020 tax return.
CNBC reports that:
Apparently, DF who died in 2020 after receiving part of the first stimulus is still eligible for the second. The whole issue of who qualifies was apparently resolved to whomever did not die before Jan 1, 2020 due to how taxes are routinely handled for a deceased person in the year they die.
https://www.politico.com/news/2020/08/05/dead-people-could-get-stimulus-checks-391866
Yes, the bill specifically says that payments for taxpayers who are deceased prior to January 1, 2020 should be calculated "in the same manner as if the valid identification number of such person was not included on the return of tax for such taxable year", which, when you unwind it far enough, turns out to be a long-winded way of saying they get $0. Since they only excluded people who died prior to 2020, those who died during 2020 are eligible.
I had also noticed that the earlier draft of the 1040 instructions for calculating the recovery rebate would allow the estate of anyone who died during 2020 to claim the payment if they hadn't received it. There had been some confusion about what should happen for people who had died in Q1 before the first stimulus check was sent out.