With the long irons being replaced by hybrids and the short irons by wedges, soon a series of irons will consist of 2-3 irons only.
customgolfcenter The golf industry needs a "great reset" on the whole numbering system
They are getting there giving clubs names instead of numbers : LW, SW, GW, AW, UW, DW, MW, XW, EW, PW (Lob wedge, Sand wedge, Gap wedge, Approach wedge, Utility wedge, Distance wedge, More distance wedge, Xtra distance wedge, Even longer distance wedge and 18° Pitching wedge).