DOC: whatsnew for 28099 (#28154)

Author: TomAugspurger

doc/source/whatsnew/v1.0.0.rst

@@ -76,6 +76,7 @@ Performance improvements
 - Performance improvement in indexing with a non-unique :class:`IntervalIndex` (:issue:`27489`)
 - Performance improvement in `MultiIndex.is_monotonic` (:issue:`27495`)
 - Performance improvement in :func:`cut` when ``bins`` is an :class:`IntervalIndex` (:issue:`27668`)
+- Performance improvement in :meth:`DataFrame.replace` when provided a list of values to replace (:issue:`28099`)
 
 
 .. _whatsnew_1000.bug_fixes: