I've been involved with the Elm community for a couple years now and I haven't noticed a recent push to get people to talk about it more. I think people are just trying it out and getting excited by it.
I don't know if my case is representative, but as a backend dev I'm still on the fence with javascript and at the same time eagerly wanting to step in the frontend realm, because, well Internet. And it seems that elm finally got the right combination of reliability (functional, immutable....) and friendliness (nice syntax, good docs...) for me to cross the rubicon.
Add to the mixture charismatic personalities like R. Feldman and E. Czaplisky and this could be the answer.
The problem is that to get anything done on the Internet, you will need easy use of existing third-party libraries for a wide range of stuff, or you end up spending huge amounts of time implementing protobuf handling, websockets, ajax, webgl and the myriad of other important technologies that you may likely encounter in those areas. Excellent libraries for that stuff are out there, but Elm makes it hard to interop with them... for now. I really hope that changes.
Note that it's working. i think i'll install it and play with it on my next free time.