Good news, everyone! We are extremely happy to announce the official release of MooTools Core 1.3 after almost a year of development. You might call us perfectionists, but we’re now ready to call the 1.3 release complete and stable. For those of you who have been waiting to make the switch, now would be the perfect time. In addition, MooTools Core 1.3 is fully backwards compatible with all documented functionality of MooTools Core 1.2, but more on that later.

Today we're releasing MooTools Core 1.2.5, which can be considered the last version of the 1.2 series. 1.2.5 is a maintenance release, and contains fixes for the latest beta browsers, such as Firefox 4 beta, Chrome 6 and IE9 beta. Below, a quick changelog:

• Fix for fireEvent under IE9 beta.
• Forcing MooTools bind implementation to work with the latest gecko / webkit beta browsers.
• Fixes HTML Elements creation in IE9 beta.
• Fixed Elements garbage collection in IE.

Or, if you prefer, you can have a look at the actual code diff.

Documentation has been updated accordingly and many new Specs have been added.

As usual, you can quickly download it or build your own version.

Keep an eye out for the 1.3 release in the following days!