People seem to be missing that this is a preview, not a product (yet). And that: "When the language is more stable, we intend to open source D2. This will happen sometime in 2022."

In D2 Tour video, at 4:30, they say

> When it's more stable, we will be open-sourcing the language.

If thats the case, that only the language will be open-sourced, not the visualization, then I'm not entirely sure what that really gets you, beyond perhaps alternative editors?

But its the layout algorithms that are actually notable.