I think 90% of the software developers who started out making Blackberry applications have given up because of how difficult/outdated/near-death it is. I would be shocked if it is ever updated anytime soon. Resources are better spent on iOS and Android applications... heck even Windows Phone would be time better spent.
Well, if the developers have truly given up on the blackberry then the Dish Remote Access page should be updated to reflect this. However, I hope this is not true as blackberry could use all the apps it can get.