I just discovered iRiver has released a new firmware update (v. 1.89) for the Story in Russia (it fixes some bugs in FB2 format support), but the website says not to use that firmware on anything but a Russian machine. I'm not sure whether to give it a try on my machine or not. If it only adds FB2 support, and doesn't address any of the other features that never got to a mature level of development, then I'd think there's not much point.
Outside of Russia, it's been a year since anything new for the Story, so ... that's pretty definitive.
(It makes me cross, as if that wasn't obvious, because it means that the device was already EoL before it even hit the market here in Australia. I know there's no guarantees on these things, but considering how friggin' expensive it was, I think that's bloody shonky.)