According to this link:
http://www.mulesoft.org/documentation/display/current/Adding+Community+Runtime
Mule community ESB server 3.6.0 should be available through this site:
Mule ESB Runtimes for Anypoint Studio - http://studio.mulesoft.org/r3/studio-runtimes
But the only availables are 3.4.0 and 3.5.0.
Is it that they decided to remove it or it is just something I am doing wrong?