Aladdin Systems has released StuffIt Expander 6.0, the latest version of the company’s near-ubiquitous freeware expansion utility. Changes include support for more file formats, including .rar files, and automatic notification of future updates. Aladdin claims that StuffIt Expander is compatible with Mac OS X Public Beta. Since StuffIt Deluxe 6.0 and DropStuff 6.0 continue to use the StuffIt 5 file format, you don’t need to download StuffIt Expander 6.0 to expand newly created StuffIt archives – the 5.x versions of StuffIt Expander will continue to work for that purpose. StuffIt Expander 6.0 requires a PowerPC-based machine running Mac OS 8.1 or later (people with earlier systems can easily stay with StuffIt Expander 5.5); it’s a 2 MB download.