Here it is, you can get all the sources for Flex3 but also Flex4 and all the other open projects here
( for now only Flex and Blase in the svn )
Yup, another one,
Check it here: http://learn.adobe.com/wiki/display/Flex/Getting+Started
This one was in my draft and I thought I had published it already.
So it’s late news, but it’s a way for me to keep the links somewhere.
And maybe it’s new for you…