Paradox has said they want to look into it, but nothing is set in stone
Mod support for any game is always a challenge, and with the technical limits of the older systems, it may make that challenge even harder to do [if not downright impossible]
Most games on console that do have mod support have a limit on mods, either by the size of the mod or how many mods you can have installed
So even if we do get mod support, it would likely take some time before we see any, because any PC mod would need to be reworked for console, and even then many things that do exist in those mods might not make it to console to fit the limits that end up imposed