More about Sun selling JavaFX to broadcasters than to end-users.
Still a couple of things sound good.
JavaFX script? WTF?
Unlike many other Java scripting languages, JavaFX Script is statically typed and will have most of the same code structuring, reuse, and encapsulation features that make it possible to create and maintain very large programs in Java
A scripting language designed for client-side RIAs which has the static typing that you need for "large programs". If ever there was self-serving, self-deluding talk it's Third, enterprises want to reuse their existing Java skills and assets in moving to RIA.. Are enterprises going to write RIA client widgets?
Widgets will get written by small, clever independents. Or more likely, graphic designers who started with Photoshop and Dreamweaver and painfully taught themselves Flex the way they taught themselves PHP. They won't get written by the mass-armies of mediocre java-school programmers who live inside the enterprise.
Meanwhile Project Caroline is allegedly their answer to Google Application Engine.