Below is a quote from a recent article on the new Ping I 530 iron. Maybe they have been reading this site lol!

As mentioned, the CG on the PING i530 irons is about 10 percent lower per club than on the i525 irons. That’s a massive migration downward.

“We’re trying to get as much mass as possible as low as possible,” explains Milleman. “We learned from our previous designs that moving CG lower and lower is going improve Strokes Gained performance faster than a higher MOI would.”