SeaMonkey 2.2 Beta 1 is available for free download  now in 14
languages and makes a list of new functionality available to a wider
testing audience for the first time. Please note that this pre-release
version is still intended for testers only and might still show some
problems in everyday use. As always, we appreciate any feedback you may
have and encourage users to help us by filing bugs.
This version is built on top of Gecko 5 and features the following new
CSS Animations  are now supported.
Improved standards support for HTML5, XHR, MathML, SMIL, and canvas.
Improved spell checking for some locales.
WebGL content can no longer load cross-domain textures. 
Background tabs have setTimeout and setInterval clamped to 1000ms
to improve performance. 
The changes page  lists a more detailed overview of new features and
fixes relative to our last stable release, SeaMonkey 2.1. 
We welcome any and all discussions on this beta on our newsgroups, or
you can even file a bug if you find one. Be sure to check our Known
Issues prior to filing bugs.
SeaMonkey 2.2 Beta 1 is available for free download on the SeaMonkey
website. Once you have downloaded and installed this release, we'd like
to encourage you to get involved in discussing and reporting problems as
well as further improving the product.
Thanks for testing and helping us to make SeaMonkey even better!