[braiamp]

Is this true anymore? AFAIK, I've seen "Updated by" (rfc2119), "Obsoleted by" (rfc3501), but that might changed afterwards https://stackoverflow.com/a/39714048

[marcosdumay]

Those notices don't usually point to all RFCs that update the one you are reading. They tend to be more complete on the case of obsolete ones.