Oracle’s revamped release plan for standard Java means the upcoming Java Development Kit 9 will not be designated for long-term support. Under this new regime, Java 9 is not the first long-term support release on which the first wave of twice-yearl "feature" releases is to be based on, but instead is the first “feature" release, with Java 8 as the base.
Under a plan put forth by Oracle on September 6, there will be feature releases of Java, driven by one or a few significant new features, every six months. Every three years, the feature release will be a long-term support release, with the next long-term support release, to be called Java 18.9, arriving in September 2018. (The version designation of 18.9 stipulates the year and month of the release’s arrival.)