Adobe AIR 1.1 is a small release that adds international support to AIR applications. In the future, the Flex team will release official updates to both the Flex SDK and Flex Builder that include the latest version of AIR. However, this particular release is happening off of the Flex release cycle, so to leverage the new functionality you must take some manual steps.
The Flex SDK is currently including support for AIR 1.1 in the 3.0.2 stable build. A stable build of the Flex SDK is one that has gone through an approval process but has not been tested as extensively as a milestone build. The fully supported 3.1 milestone build is planned for mid-August (you can track milestone progress on the Flex open source site). Download the 3.0.2 build from here and install it by unzipping it to a location of your choice.
If you’re using Flex Builder, add the newly downloaded SDK as an Installed SDK. For instructions, see http://livedocs.adobe.com/flex/3/html/build_6.html#162812.
