Sun just announced JavaFX? What is it? Here's the short answer: * JavaFX Script - the heart of JavaFX. A new scripting language that makes it easy to code sophisticated, dynamic, animated user interfaces. JavaFX Script runs on top of Java SE - think of it as making Swing and Java2D easier and more productive to use * JavaFX Mobile - This is a new mobile phone OS that can run Java SE; it's actually the SavaJE IP that Sun recently acquired. Any application you write in JavaFX Script will run on a JavaFX Mobile device, because the device runs Java SE. It's not clear to me if JavaFX Script will ever be able to run on top of other phone OSes e.g. Symbian, or whether the only option on the horizon for this is a JavaFX Mobile device (more thoughts on JavaFX Mobile, and how it compares to iPhone here). * JavaFX Designer - This doesn't exist yet. However, Sun just announced that they are creating new developer and/or designer tools to make it easy to design interfaces based around JavaFX Script. You really need tools develop productively in JavaFX Script - otherwise, you'll be defining shapes by hand e.g. draw a rectangle 100 units wide and 200 units high.

http://www.psynixis.com/blog/2007/05/08/what-is-javafx-heres-the-answer/

http://java.sun.com/developer/technicalArticles/scripting/javafxpart1/