Given that what she described is unlike anything they have done in 5E so far, it could go a lot of different ways.
The Lantan thing comes from literally years of hints from Crawford that Lantan will feature majorly in an upcoming Storyline, including future-proofed connections in Dragon Heist and Tomb of Annihilation. There are additional hints of something Planar and/or Spelljammer-y, probably tentacley, and just maybe Modrons adjacent.
I think the upcoming plotline is actually going to be Baldur's Gate 3, we know the Mindflayers have spelljammers, so going to Lantan to aquire our own Spelljammer, makes a lot of sense.