The Omni Group today released OmniOutliner 2.2, the latest version of its popular Mac OS X outlining tool. The new version adds XML export, which allows users to present outlines in many new formats through XSLT, a language for transforming XML documents into other types of documents. OmniOutliner 2.2 also provides import and export compatibility with Keynote files and includes several bug fixes, new features, and improvements since version 2.1.1, all of which can be found in the release notes.