Based on the current status of the open items and where we are at in the release cycle, the date for the first release candidate of PostgreSQL 11 will be 2018-10-11.
If all goes well with RC1, the PostgreSQL 11.0 GA release will be 2018-10-18. This is subject to change if we find any issues during the RC1 period that indicate we need to make an additional release candidate prior to going GA.
To the entire community, thank you for all of your hard work on developing PostgreSQL 11. It is exciting that we are finally at this point where we are ready to make our major release.