JavaFX1.2 was released on June 02, 2009. It is touted to have a lot of performance improvements as compared to JavaFX1.1.

After exploring eval versions of JavaFX1.2, I found that a lot has changed in 1.2. Specifically, the Skin and Themes support is almost re-written. There have been many other changes too. Inyoung, a JavaFX consultant at Sun has nicely captured most of the changes in her blog at http://javafx.com.