Adam Beynon is announcing that Opal with version number 0.8.1 is already available to download.
What is Opal ?
Opal is .
Opal compiles source-to-source. Besides the version, Opal can also be integrated with jQuery, Ruby on Rails, Node.js and TodoMVC.
This is changelog for Opal version 0.8.1 :
You can read the complete changelog and also download this latest version on their homepage: opalrb.org