JavaFX and the Java Development Kit (JDK) are getting a divorce. Oracle has announced that JDK 10, which is slated for release this spring, will be the last version to incorporate JavaFX, its rich client development tool for Java. JDK 11, due for release in September 2018, will not have the tool, which has been part of the JDK since 2012.
Oracle said that turning JavaFX into a standalone download will make it easier for people to contribute to the open source project and for developers to use it. Also, the JDK has moved to a faster release schedule, and JavaFX updates need more time.
Some have speculated that another contributing factor may be that fewer developers are using JavaFX, as most are choosing instead to rely on HTML5 to provide similar functionality.