»Final draft of ECMA-262 – the ECMAScript language standard – has been published
...
This revision of ECMA-262 will be known as ECMAScript, Fifth Edition. It was previously developed under the working name ECMAScript 3.1, which will no longer be used.«
http://www.ecma-international.org/publications/files/drafts/tc39-2009-025.pdf
Zum Hintergrund:
http://aktuell.de.selfhtml.org/weblog/javascript-standards
http://molily.de/js/standards.html
Mathias