To get the bits, please go here:
Flash Catalyst: http://labs.adobe.com/technologies/flashcatalyst/
Flash Builder 4: http://labs.adobe.com/technologies/flashbuilder4/
There is a ton of new content on the ADC about these products. Here's a few links to get started:
Flash Builder and Flex 4 SDK: http://labs.adobe.com/technologies/flashbuilder4/tutorials/
Flash Catalyst: http://labs.adobe.com/technologies/flashcatalyst/tutorials/
Flash Platform videos: http://labs.adobe.com/technologies/flash/videos/
