Although very few plugins and themes are available for Bon Echo Alpha 3, the new functionality is definitely welcome – tab close buttons, phishing detection and session saving. Themes, extensions and installations are now bundled in the Addon section. In addition, Alpha 3 is very stable with no problems exhibited over extended browsing sessions.
In other Mozilla news, make sure you update both Firefox and Thunderbird to the 1.5.0.4 versions due to multilple vunerabilities.