No, new value is 300 Meter, the configuration files in your Discovery Folder are the new ones.
We can still talk while cloaked, those updates are only for other servers.
Don't know if it is relevant here....How many battleships can you jump with one JD4? Take into account the Heavy BS'es like Turtle, as well as the light ones like Makos and Osiris. Is 500 enough range to jump a fleet of 4-6 of them?