It would be huge if you could make cross-platform AU/VST*/AAX without the costs of JUCE, but I suspect that isn't on offer here.
you can make cross-platform plugins without JUCE by using iPlug, Faust or even Rust
the selling point of this seems to allow js/web developers to build plugins
and we already know what happened when web developers were allowed to build desktop apps (Electron)
luckily given real-time and cpu constraints this might never happen to Audio Plug-ins
I agree about the js though. Even if it's a reinvention of web audio with a C++ backend, js and DSP just don't feel like a good fit.
And I would be surprised if the UI side wasn't limited in the way that full native isn't.
The new docs structure broke the website links, I'll get that fixed asap. See here in the mean time: https://www.elementary.audio/docs/packages/plugin-renderer
Also, as another user here has already pointed out, the "plugin development kit" is still macos only, though I anticipate releasing the windows version within hopefully a week or two.
since I was already making my own knobs and panels for vcvrack, it was an easy fit for building out vst3/au plugins.
And there's a free tier that allows up to $50k annual revenue.
That is indeed pretty affordable.
J V3 used to be more than that. I remember looking at it and writing it off for cost reasons, but that was quite some time ago.