Unless they can predict the future, it was updated as recently as 2009:

> The fourth edition was abandoned, due to political differences concerning language complexity. Many parts of the fourth edition formed a basis of the new ECMAScript edition 5, published in December of 2009.

EDIT: If you scroll to the bottom right it says: "Page last modified 21:08, 5 Jan 2012 by Janet Swisher"

Yea, that date is under "Original Document Information".

Fortunately the document does not have any material that is particularly dated and not useful today.

Who cares, when was Javascript last updated?

I learned something new.

The page was actually updated relatively recently. I don't know where you got that from.