According to Mitch Kapor's weblog, Chandler 0.1 is now available :

The first release of Chandler, release 0.1 is now available! While we're still very early in the design and implementation process, we intend for this 0.1 release to make us a more fully open project. We have made the release available for download, opened up our bug tracking database, and opened our source code repository. We have also spent quite a bit of time in the past few weeks focusing on improving our code and documentation.