Apple has updated the programs of the iWork package.
Only a few new features have been added: Numbers has become a bit more performant and Keynote now supports animated backgrounds. The case of Pages is more interesting: It now masters the mail merge function and thus a function for which many have previously resorted to Microsoft Office.
For very large and complex address lists, the MS solution is probably still better, but that’s not the point of iWork. If you use the package for your club, for example, the mail merge function is now a welcome option.