NEW FEATURES

*OmniGraffle 6 offers a complete User Interface redesign from the ground up.
*Application resources such as Templates and Stencils can now be fully managed from within the application.
*Improved and powerful controls have been added to edit and mask placed images directly on the canvas.
*New artistic Fill and Stroke styles have been added: Freehand, Stipple, and Marker.
*Line Labels can now be set to follow the path of a curved line.
*The color and position of manual Guides can now be set by hand, and can be dragged from one canvas to another.

PRO FEATURES

*Visio import/export: Open Microsoft Visio? documents (VSD or VDX) directly in OmniGraffle, as well as Visio stencils (VSS) and templates (VST). Export to Visio XML documents (VDX).
*Shared layers: Easily update common elements that you'd like to display on multiple canvases. Layers can now be toggled between a normal and a Shared layer.
*New controls specify which edge or center of an object is reflected in the Geometry Inspector. You can set the X and Y coordinates of a selected vertex point.
*Shape combinations: Easily create new shapes using combinations of existing shapes (with support for union, intersection, and subtraction). Combined shapes can now be uncombined into their component shapes.
*Resolution-independent Display Scale: When zoom is at 100%, match an Apple point, PostScript point, or screen pixel.
*Photoshop export has returned, and supports the export of OmniGraffle layers to Photoshop layers.
*Tables: Group shapes using tables, making it easy to add new rows or columns of your template shape.

HomePage - http://www.omnigroup.com/omnigraffle