Hi Ann,
well I know that it calls SonarHTML now. Thats not the case
I download the latest LTS version of sonar but the extention folder is empty. what do you mean with pre-installed? Other question is how to download older versions of the plugins?
The mechanism in 6.7 is a little different. Look instead in $SONARQUBE-HOME/lib/bundled-plugins, the contents are installed in extensions/plugins on first startup.