I feel like I have to look up the rules everytime someone asks about it!

Ikr? I don't think he has to until 2025, but I couldn't find it on an IRS posting. I did find info from other sources like Kiplingers and then you never know what is most recent! 

You can check 2024 pub 590B for latest rules, but I believe this irs site has latest also.

https://www.irs.gov/retirement-plans/plan-participant-employee/retirement-topics-beneficiary

It's not new, it's clarification as to the mechanisms. In another topic here, there is this link:

https://www.irs.gov/newsroom/treasury-irs-issue-updated-guidance-on-required-minimum-distributions-f...

Which might be useful. The difficulty comes from all the little details specific to your scenario, such as date of death, relationship and age of beneficiaries, type of IRA, etc.