Any Flex 4 migration experience?

Question

My current development stack is MySQL + iBatis + Spring + Spring BlazeDS Integration 1.01 + BlazeDS 3.2 and Flex 3 with Mate 0.8.9 framework. Now Flash Builder 4 beta 2 is

Answer 1

Here's a few things that might help:

1. The most recent version of BlazeDS is 3.2.0.3978. I haven't heard announcements of a new release.
2. Since you'll be keeping the same version of BlazeDS, porting your existing code to Flex 4 should have no effect on your back end (Spring BlazeDS integration, iBATIS, MySQL, etc.).
3. Mate doesn't yet officially support Flex 4. I had compile errors when I tried to switch. Here is a link to a discussion on workarounds, and a link to a Flex 4 port.

Good Luck!