Support for salt 2018.x

Do you plan to support salt 2018 for the proxy ?

when trying to install rubygem-smart_proxy_salt on my salt-master I get:
Installed: salt-2018.3.0-1.el7.noarch (@saltstack)
salt = 2018.3.0-1.el7
Available: salt-2015.5.10-2.el7.noarch (epel)
salt = 2015.5.10-2.el7

Do you plan to support the latest version of salt anytime soon ?

The Salt plugin is looking for a new maintainer (see Foreman_salt maintainer needed topic). Until we have one, it’s unlikely to get new features.