Changes which were introduced since the last availability email that may be of interest :
New Proposal - Mark Reinhold has asked for comments on the jigsaw-dev mailing list 
In short, the existing "big kill switch" of the `--permit-illegal-access` option  will become the default behavior of the JDK 9 run-time system, though without as many warnings. The current behavior of JDK 9, in which illegal reflective-access operations from code on the class path are not permitted, will become the default in a future release. Nothing will change at compile time.
-- Rgds,Rory O'Donnell Quality Engineering Manager Oracle EMEA , Dublin, Ireland