
A year after Flash Builder 4 and Flex 4 SDK were released, new versions are available with Flash Builder 4.5 and Flex 4.5 SDK! The main focus for Flex 4.5 SDK and Flash Builder 4.5 is the ability to build mobile applications that target the Google Android, Blackberry Tablet OS, and Apple iOS operating systems. Additionally, Flex 4.5 SDK introduces new Spark components and improvements for large application development while Flash Builder 4.5 introduces dozens of new coding productivity features for faster ActionScript and MXML development.
Adobe have really focused on mobile development for this release, offering developers one tool, one development framework and one codebase to build mobile applications on Android, BlackBerry Tablet OS and iOS. Flash Builder 4.5 also helps developers make these applications ready to deploy for an app store/market. You can immediately develop applications for Android, and support for BlackBerry Tablet OS and iOS will be available through free Flex and Flash Builder updates in June.
Here are a few resources to get things started:
Build your First Mobile Application in Flash Builder 4.5
Build your First Flex 4.5 Application
Mobile development using Adobe Flex 4.5 SDK and Flash Builder 4.5