I've added a few additions to the "Add Dependency" dialog in NetBeans 6.7 daily builds (and the upcoming Milestone 3 of 6.7)
First, the dependency's Version field includes all properties defined in the project that end with .version, eg. ${spring.version} as suggested in the Maven Book, Chapter 8.3.
Second, I've created a new tab called "Open Projects" that lets the user pick from the list of currently opened projects and declare them as dependency of the current project.
Enjoy
