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The ActionScript side of Falcon is of shipping quality and is the basis for Flash Builder 4.7 Preview 1. The rest of Falcon (MXML, CSS, FXG, PROPERTIES) is pre-alpha quality and not ready for production use. Nevertheless, Falcon already supports enough of MXML to compile a correctly-running version of Checkinapp, the test app that is part of the SDK. (Exception: Checkinapp uses one Repeater tag, which is not yet implemented.) The main areas where Falcon needs more work are databinding, states, MXML-specific error reporting, and ASDoc generation.
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