Most of the details in the subject, and see
https://www.elm-conf.us/ for more on submitting a talk.
Sponsorships are available if your company wants to promote itself in the Elm community and get a deal on tickets at the same time. Email me privately or at
elm-...@thestrangeloop.com for more details, or download the prospectus linked in the footer of the site.
I'm super excited that this is happening again, and I hope to see all of you in September! :D