The developers of NovaMind continue to add new features and functionality to the "early adopter" Windows version to bring it up to parity with the Mac OS X version, via weekly releases. Latest improvements include the addition of branch boundaries (drawing a border around a group of items in your map), completion of the outline view, full screenwriter capabilities, a full graphics library and an auto-save capability.
They are also working on a NovaMind 3.1 release, which they hope to release in the next few weeks. According to the latest NovaMind newsletter, it will be rolled out first for the Mac, followed shortly thereafter by the Windows version. Watch for some new cool new features, according to a NovaMind reseller who has gotten a "sneak peek" at version 3.1.