You can now use the data your users enter in a page to dynamically update the content of the page using formulas. This change means that you can now use runtime user state, as well as upstream data, to make your pages dynamically update as your users fill them out. You can reference page element data in: the content of heading and paragraph elements, the description of all page elements, and when creating options for page option elements. One of the most powerful use cases of this feature is the ability to generate option field options on the fly.
You can access page element data by referencing META.page_elements
in your formulas.