The standard currently displays a comment when viewing Master, but it should also display comments when viewing older versions.
For older versions of the standard, something along the lines of:
"A new version of the standard has been released. The latest version in {ver}. You are viewing version {ver}. This version is maintained here for reference."
For master:
"You are viewing a draft version of the standard. The current official current version is {ver}. On these pages you can see unconfirmed changes to the standard."
The standard currently displays a comment when viewing Master, but it should also display comments when viewing older versions.
For older versions of the standard, something along the lines of:
For master: