Well, unfortunately people still buy thinking new one will make them better musician.That's why Yamaha or Korg don't need to change anything.There is no need for that.To put 64mb or 96mb ram is a joke at this age.With Yamaha you can't load more than one expansion if you want too.I believe the same will go with Korg too.Now days we spend more time learning new keyboard and arranging new settings then we do learning new songs etc..And still sounding almost the same.