The Omni Group today released OmniGraffle 2.1, an update to its drawing and diagramming tool for Mac OS X. Version 2.1 is built specifically for Mac OS X 10.2 (Jaguar), and adds support for custom page sizes, transparency in printing, PDF export, and EPS export under Jaguar. OmniGraffle 2.1 is a free upgrade to users of previous versions, and sells for US$59.95 to new users.