This release is mostly about scopes. Dialogues no longer have to sit on a single scene, variables can be bound to a scene, a chapter or the whole story and text fields can now pull values from variables directly.

There are also two new input actions: one for free text, one for picking from a set of choices. On top of that, stories, public author pages and asset packs are now browsable on the website.

If you want the full breakdown:
https://talescape.com/en/about/journal/more-variable-magic-scoped-dialogues-more

If you want to try things yourself, join the closed beta:
https://talescape.com/en/closed-beta