WebCit-NG is still the intended direction of the project. I want to retire WebCit Classic. It's just a matter of time.
By "citadel-thunderbird interactivity" I assume you mean CalDAV. Yes, that's already in WebCit-
NG and it already works. So it'll be there out of the gate. Remember, WebCit-NG is being built in a "REST-first" mode of operation.
Yes, I meant CalDAV. sorry.
Anyway, some news in regard, by any chance?