- You can use TemplateData
https://www.mediawiki.org/wiki/Extension:TemplateData to indicate how you want a template to be displayed in wikitext. Tools like VisualEditor that edit templates will soon use this information. [1] https://phabricator.wikimedia.org/T64147
I know we're aiming to avoid jargon here, but I find it hard to imagine that people will understand what's new based on that blurb.
-- -bawolff