Well Paradox release DLC's on console in the form of 3 add-ons that are sold as an Expansion Pass, So far the two Expansion Passes have had one Expansion, one Story pack and one species pack. I reckon Paradox will try and get us one more Expansion Pass by the end of the year which I'll be happy with. Out of the remaining 2.2 compatible add-ons, which ones fit into which of the three categories? We'll likely get either Megacorp or Federations, those sound like Expansions. I think we'll probably get Lithoids since that sounds like a species pack. From what limited knowledge I have on Distant Stars and Ancient Relics they sound like Story packs so we'll most likely get one of them. Personally I'm hoping for Distant Stars because it sounds cool, I know mostly nothing about it but I've heard about the L-gate which is apparently "inaccessible via Hyperlanes" which sounds menacing, I don't know which one out of Megacorp and Federations I prefer, but I would like Diplomacy to be a viable option or a change, and Lithoids sounds cool I guess.
Anything past patch 2.2 is unlikely to be added in with the next expansion pass as they would likely need to update the game for any core changes made in the interim
We are guaranteed Distant Stars and Megacorp for the next pass because those are the last 2 dlc missing from the 2.2 update we got