I don't know that it was supposed to have a limited release. There's a G3.5 version that looks nearly exactly the same, I believe a few years ago when the G4 version was first announced people tried to find/order it but kept getting retailers that only had stock of the old G3.5 version. I think maybe the G4 one wasn't ordered and therefore wasn't produced in great numbers due to the pre-existing stock not moving.