#19024 was about adding a general section on the various uses of '*'.  This was before the new * unpacking generalizations.  It was closed because the then existing uses *are* documented and are indexed in the first, Symbols, section of the index. 

There are now 4 entries. I think entries for standalone '*' (operator and function defs) should be separated from those for '*identifier'.  Entries for new *identifier uses need to be added to the index.  Assignment statement *identifier target is in 7.2. Assignment statements. 

Actually documenting the changes in #2292 is #24136 (untouched since July).