For eager beavers who want a taste of Firefox to come, Mozilla issued a second preview release Wednesday of the browser.
The software is based onthat underlies Firefox. The current Firefox 3.6, and an , are based on 1.9.2.
The headline feature of the new preview release is the same for Lorentz, though: out-of-process plug-ins, which means that Adobe Systems Flash Player and the like run in a separate memory compartment to protect the browser overall when they crash. Mozilla hopes people will see how well it works on an OOPP testing page.
However, according to a mailing list posting by Benjamin Smedberg, who's working on the OOPP feature, it only works on Linux and Windows systems at present. "MacOS presents some unique challenges: the traditional drawing and interaction model for plug-ins is very difficult to do across processes. We are working on Mac support for multi-process plug-ins, and hope to have a preview of this work available soon," Smedberg said in an OOPP blog post.
The new alpha release also should cool off some hot spots that consume a lot of labor when laying out Web pages, Smedberg said, thereby improving performance.
Mozilla detailed the 1.9.3 preview release features in a blog post, too.