Yes they added it, and it works great.
For instance I changed it in one of my scripts, to add all columns at once:
if (groupId) {
listIx = Listview.AddItem([fname,fext,stat,color,newfol,fpath], 0, groupId);
} else {
listIx = Listview.AddItem([fname,fext,stat,color,newfol,fpath]);
}
(I kept the “listIx” though, because I also need to add an icon - and this can’t be done in one move afaics).
And, although not yet tested, it should be possible to add multiple lines x multiple columns by using a 2-dimensional array (or an Opus vector).
This improvement is long overdue.