The goal of this Project is to produce an open-source reference implementation of the Java SE 9 Platform, to be defined by a forthcoming JSR in the Java Community Process.
The JDK 9 repositories have been open for bug fixes and small enhancements for some time now. Features for the release will be proposed and tracked via the JEP Process, as amended by the JEP 2.0 proposal (which will shortly be folded into the main JEP process document).
JEPs targeted to JDK 9, so far
102: Process API Updates
143: Improve Contended Locking
158: Unified JVM Logging
197: Segmented Code Cache
198: Light-Weight JSON API
199: Smart Java Compilation, Phase Two
201: Modular Source Code 211: Elide Deprecation Warnings on Import Statements
212: Resolve Lint and Doclint Warnings
213: Milling Project Coin
214: Remove GC Combinations Deprecated in JDK 8
216: Process Import Statements Correctly