Quote Originally Posted by Doug Dawson View Post
It’s a code requirement now that new receptacles have to be arc fault protected (there are some exceptions.) However, if you have an older panel that won’t accept the newer breakers, AFCI receptacles (used for the first receptacle in the run) are available.
Just swapping out receptacles doesn't trigger a requirement to bring the wiring up to current code in any jurisdiction I know of (even here in the mother of all nanny states). Other work may trigger such a requirement and then, of course, you have to deal with it.