Dart is now an ECMA standard

Google’s Dart language is now an official ECMA standard with the catchy name of ECMA-408ECMA may not be a household name, but if you’re reading this, your browser is using ECMAscript to render at least some parts of this page. That’s because ECMAscript is the official standard body behind JavaScript. In the past, the organization has also been behind the specs for JSON, C#, the Office Open XML format and various CD-ROM specs.Credits: techcrunch

Hopefully now we can see Dart VMs in more browsers