Google has unveiled Dart, its new programming language for writing web applications. In a blog post, Dart software engineer Lars Bak explained that the goal is to create a "structured yet flexible" language that performs well in all environments and is easy to learn.
He followed up with "JS could make it quickly irrelevant by adopting the good bits" and "Hopefully it'll give JS a kick in the scruttocks when it comes to adopting optional typing and classes".
The language and some tools are available on dartlang.org. There's a cool app on the front page called Dartboard that enables you to type in code and press Run to see the output right there on the page.
Also check out @dart_lang, which was doing a Q&A this morning.