In case you missed it among the host of announcements at JavaOne (JavaOne 2011: First Wrap-Up):
Java FX 2.0 is now available for Mac OS X as a Developer Preview (download). Also, the NetBeans 7.1 Beta release (download), which includes full support for JavaFX 2.0 as well Java 7, is also available for OS X.
Questions about JavaFX 2.0? Here you can find the ‘short and sweet’ JavaFX 2.0 FAQ page.
Finally, getting started with JavaFX 2.0 is easy: Follow this excellent JavaFX 2.0 Tutorial and learn about Getting Started, Creating a User Interface, Effects, Animation, and Media, Application Logic, API Reference and Deployment.
JavaFX is back!