Change effective on 06 November 2018
Starting today (Tuesday 6th November), Private Heroku Postgres plans will start to have the following Heroku Postgres provided config vars removed from applications:
These config vars were used as a mechanism for delivering data required to run various heroku CLI commands, we are updating to use a new mechanism that does not require config vars. This means applications with many databases attached will no longer receive a periodic release to update these config vars. Customers receiving the new functionality will receive a single release (which will trigger an app restart) from Heroku Postgres to remove the old config vars.