at the moment they plan to catch the console version up to the pc version before they even consider adding in mods
then on top of that, they'd need to release a modding tool (or find one compatible with console stellaris and use it) as well as get the ok from Sony and Microsoft
once those 3 things happen, players can either start making mods or attempting to port pc mods
tldr don't expect mod support anytime soon, given that we still have no set release date for Expansion Pass 3; which will finish up the rest of the 2.2 DLC we still don't have; and 0 word on Expansion Pass 4 which would include the remaining DLC [Lithoids, Ancient Relics and Federations]