Single Status Update
Clarification on the Expansion Pass DLC for those confused
So it's just $30 straight up for your preferred version, you'll get both expansions as they come AND the 200 returning Pokemon can be sent to vanilla SwSh.
Sold. You did good in my eyes Game Freak.
400/890 in the base game.
600/890 in the DLC and updates, assuming that they're adding in exactly 200.
This doesn't count for alternate forms and regional variants. For example, currently in SwSh it's completely impossible to get Alolan Vulpix and Ninetales, even though their regular forms are available. I'm going to assume that all regional variants are going to be included provided you transfer them through Home.