I don't recall anything about the RM being limited but Tamiya is king of the discontinued game. It seems like every Thursday or so they meet to dump something else from the product line once everyone is excited about it. This is only a guess but the F103RM has sold very well around the world in it's first run so, get rid of it and enter the anniversary edition and the new RC HP F103 which cost more but is probably still pretty much the same car. They don't have a pic up yet of the HP but I'm hoping for more than bling. On the plus side now we can watch ebay for a deal on a new RM.