I would say it is quite active, although still small.

I think there is a slow shift toward community built tools such as lambdera. The language itself is pretty stable (and good, IMHO).

Most of the news are available on the discourse discourse.elm-lang.org

Elm seems stagnant because Evan is not so transparent and prefer work in a private branch and to release work in batches instead of having a release every 6 months, this makes people think it is dead. Elm is still being used in production by dozens of companies with huge codebases (100k~400kloc), and the community is very active, there are amazing projects like elm-pages, elm-review, elm-ui (from mdgriffith), elm-spa, elm-charts, lamdera and others.

check out the elm slack! Very active, but that's behind a signup wall so that's ahrd to see from the outside. https://elmlang.herokuapp.com

Most of the activity happens in the (public) Elm Slack community, so it's not indexed in search engines and hard to find in StackOverflow, but it's a really effective place to get advice and help with a problem in a more personal way