Suspected error in the ISO 15924 standard

[Wáng Yifán]

Is the Unicode contact form a valid channel to report what seems a bug
in the ISO 15924 text?

Specifically:

In the recently revised ISO 15924:2022, page 3, among numeric script
codes it says:

> 700–799 (unassigned)

But the range has been used since 2014 by Duployan, and according to
the notice of changes https://unicode.org/iso15924/codechanges.html:

> On 2010-07-18 the range 700-799 was assigned to "Shorthands and other notations".

So they shouldn't have been marked "unassigned" anymore at the point
of revision.