Right now, people who are not involved in the development of kotlin doesnt really get much information.
If i want to know whats going on i have to watch stackoverflow/devnet/youtrack/github-commits
to see whats happening behind closed doors.
There is no roadmap about what stuff will be implemented/is done.
Neither some estimated etas for new milestones/betas.
IMO it could attract more people if they know what language-features are going to be implemented,
get excited and discuss them.
Nowadays people will search for something like a roadmap/release ETA and just
run off because they cant find any information. (Andrey talked about a beta release
"in a couple of months". That was in 2013. No word about any beta release till then)