But There's Good AppleScript News, Too
While losing iWorks AppleScript support is anxiety-inducing, some great new features have been added to AppleScript in Mavericks that are pretty exciting. I've played a little with libraries and Notifications in the DPs, but haven't incorporated anything into my scripts since most a few of these features are not backwards-compatible on earlier operating systems.
Don Southard has a good article at MacStories outlining the latest stuff.