Flex, Flash and ActionScript is here to stay...
For all those who are worried about the future of Flex, Flash and ActionScript must read the articles listed below:
Why people are moving from JAVA to FLEX:
Part 1: We are moving from JAVA to Flex
Part 2: Important Differences between JAVA and AS3
Part 3: Beginning the Actual Port
Part 4: Anonymous Classes and the Adapter Pattern
Part 5: Network Communication
Flash CS4 still uses AS3
ActionScript 3 and EcmaScript 4
Hoping, these articles have somehow helped you to see some light at the end of the tunnel. And at the same time got you motivated to learn more about Flex and ActionScript :)