Hey, the betas are public now, go forth and download:
- 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 Adobe Labs 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/