Thanks for the fix.
OK, so 5.26 is the ROOT version that is documented. That's good to know.
But the date is rather confusing, isn't it? The date on a document is usually interpreted as the date of the document, not the date of the thing it describes. If I write a book about Special Relativity, I don't usually put 1905 on the title page.
Sorry for the pedantry, but it is useful to know whether one has the latest version of a printout or archived copy. If you really don't want to change the date on the front, perhaps you could add a revision date.