Apache Flex SDK 4.8.0

1. It was released... some time ago... 
2. Nothing new in sdk, mostly "rebranding"
3. It is not enough to just download binaries from incubator's downloads, you also need to download and "install" all dependencies (to use in IDE). But there is an alternative way to install the sdk - packager. The packager is an AIR application that will download sdk and all dependencies and "install" them properly. But you need to compile it first :)