Flash Builder 4

Flash Builder 4 is released.
Download here http://www.adobe.com/products/flashbuilder/

New features in Flash Builder 4 :
http://www.adobe.com/products/flashbuilder/?view=topnew

Overview of the Spark architecture and components by Deepa Subramaniam:
http://
www.adobe.com/devnet/flex/articles/flex4_sparkintro.html

Comparing Flex 3 with Flex 4:
http://www.adobe.com/devnet/flex/articles/flex3and4_differences.html

Test Driving in 1 hour:
http://www.adobe.com/devnet/flex/testdrive/

Learn to use Adobe Flex 4 and Flash Builder 4 in a week video training course:
http://www.adobe.com/devnet/flex/videotraining/