Classic templates :
Allow you can manage software release delivery (release,sprint,stories,bugs,etc..)
lightweight version of the classic and still under development and doesn't contain all software project features, it doesn't contain release mgmt in the meantime.
These are not a software project templates and doesn't support release mgmt except bug tracking template which support only tracking the bugs/tasks per release.
it is expected that jira will continue update the feature templates, so, in future you can use the preview button to check the release section exist or not.
I hope this will help
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