Dart is an open-source, scalable programming language, with robust libraries and runtimes, for building web, server, and mobile apps.
A new Dart Editor build is available at www.dartlang.org/editor. Changes include:
General context menu cleanup
UI tweaks to the Class Hierarchy view
Improved logging for failed update checks
More analysis errors and warnings
Various analysis, editor and refactoring fixes
Breaking Change List:
New HTML form field objects and constructors. e.g. RadioButtonInputElement. See more at http://code.google.com/p/dart/issues/detail?id=1684
And as always, view the changelog for the full list of changes, and to get started with the Editor see our tutorial.