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e(fx)clipse nightly and >= JDK8b111
JDK8b111 has a small but essential new zip in it:
You are right - finally the source-code of JavaFX is shipped with the JDK. The next nightly builds of e(fx)clipse appropiately detect the source-zip which means you can now inspect the JavaFX source directly in the IDE, step through the JavaFX-Code in the debugger, ... if your project uses Java8.
This is a huge forward when developing JavaFX applications.