I've updated the OmniGraffle web design template formerly hosted on my blog at urlgreyhot. The new UX template is now formatted for OmniGraffle Pro version 5.
In this template you'll find shared layers (masters) for a title page, wireframe, wireframe/storyboard hybrid, simple storyboard, and storyboard with notes. Guides and adherence to a regular grid make it easy to use. The doc is sized so you can work at 100%, and print at 8.5" x 11" or 11" x 17".
You you can view screenshots and download here at Konigi.