Flex 4 - Flex SDK - Adobe Open Source. GotoAndLearn() - Free video tutorials from Lee Brimelow on Adobe Flash. Flex 4.0 (Gumbo) tutorial :Installing Flex 4.0 SDK in Eclipse IDE , Flash Player 10 « Flex News , Links & Resources. Flex 4 code is going to be more declarative than in any other versions and what that means is that component behaviors such as states are going to be separated from visual and can be created in Thermo as well as other Adobe suite CS4 tools such as Photoshop, Firework or Illustrator, allowing developers to take advantage of the components built on FXG and working directly with Flash player version 10.
This major advance will change the Flex development cycle paradigm. Flex 4 is being integrated with the Halo (Flex) architecture and additionally, Flex 4 will have a new MXML language namespace with backward-compatibility with the older namespace, a new file format called Flash XML Graphic (FXG). FXG format is a vector-based XML used for graphical elements and similar to SVG. Macromedia Flash Resources and Tutorials.