There are some juicy updates in Aperture 1.5 with regards to AppleScript support. One of the biggest problems I had in developing Annoture was getting references to the currently selected images. There simply was no way to accomplish this in versions prior to 1.5. Now, however, we have selection available in AppleScript, as well as easier ways to tag metadata to images. The next release of Annoture might be written as an Automator action with iView. Stay tuned for more details once I have my hands on 1.5.