Currently the Elektron user community is being served by a user-managed community at http://elektron-users.com, but with the launch of Elektron’s own community the site will be retired according to posts here.
The Elektronaut community has been eagerly anticipated by Elektron users for over 16 months, but other projects (i.e. the A4) taking priority has led to delays in the actual release.
The new community is rumored to open it’s doors on September 9.
Update: As expected the community is now (as of 9/9) open.