The release of Ruby 2.0.0

Today, February 24, 2013, a new version of Ruby 2.0.0-p0 has been released.
This is the first stable release of the new major branch.
Let's see what's new brought us a new release.

Syntax changes

• Keyword arguments have been added to increase flexibility when designing APIs .
• Added a new way to extend the class Module # prepend
• %i now used to quickly and easily create a character array
• __dir__ returns the name of the directory from which the file is currently being executed.
• UTF-8 default encoding

Built-in libraries

• Enumerator # lazy
• New methods Enumerator#size and Range#size for lazy computing
• Added #to_h agreement to Hash.
• Onigmo as a new regular expression engine
• Asynchronous API exception handling

Other changes

• DTrace and TracePoint support
• Various performance improvements
• Refinements added as experiment.

News on the official website