I tried to find GAE plugin for netbeans 6.9, but there is only for 6.8. Last Netbeans version doesn’t work with plugin for 6.8, GAE projects just don’t open.
So, I built plugin from source, seems it works, at least project can be opened, built, deployed to App Engine.
You can download it here http://www.mozgoweb.com/netbeans-6.9-gae-plugin.zip
Google App Engine plugin for Netbeans 6.9
