Thread:Project:Current issues/Templates for release status

Although we have several templates (and parameters in templates) to mark the status of extensions, functions, and variables (e.g., obsolete ones), we don't seem to have similar templates for releases of MW itself (i.e., something that can be slapped on a page like MediaWiki 1.18 to quickly and clearly explain that it's an old version that shouldn't be used, etc. — somewhat like except not for pages about upgrades). I'm thinking, , , , etc? (Whatever the proper set of terms would be...) Would such a template be worth making?