JRuby is a Java implementation of the Ruby language. JRuby allows to build applications in Ruby (especially Rails) and include them in a Java environment (e.g. JEE). Despite the difficult it is already one of the fastest Ruby implementations available and invokedynamic it will further improve the performance.

With this release, the Java 1.4 support has been dropped. The highlights of the release are:

• Fixes so that JRuby runs in restricted environments better like GAE/J
• Accessing primitive Java arrays are about 10x faster
• timeout.rb is now ~40% faster
• Method cache performance improvements
• irb works in –1.9 mode now
• Additional Miscellaneous 1.9 fixes
• rubygems 1.3.3, rake 0.8.7, and rspec 1.2.6 upgrades
• 66 bugs fixed since 1.2.0

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4. Netbeans 6.1 has been released
5. JavaFX 1.0 will be launched tomorrow and supports Mac OS!