Omnigraffle Pro 6.0 - Download Where?
 

Where is the link to download Omnigraffle Pro 6.0? I only can find the regular version. Am I doing something wrong or what?

There's only one version of the application now. You unlock the Professional feature set by entering in the proper license key (kind of like in-app purchases on the App Stores).

If you're running in the 14-day Trial Mode, you can switch between the Standard and Professional feature sets via the OmniGraffle Menu, there's a menu to toggle.

Hope that helps,