Flash Builder 4
This is the new name for Flex Builder 4, as Adobe feel the Flex moniker was putting AIR and pure As3 developers off using it. The beta download is for the “Premium” version. According to the Flash Builder 4 FAQ on the Adobe Labs site, this is a name change from the fully-featured Flex Builder’s “Professional” tag to avoid confusion between Flash Builder and the Flash designer program, Flash CS4 Professional. Giving the Flash designer package a proper name would have caused a lot less confusion, but at least they have given it a bit of thought.
Flash Builder 4 can be installed as a stand-alone application alongside an installation of Flex Builder 3. So it is possible to test out the beta without losing one’s production environment. Everyone can enjoy a 30 day trial, but you’ll need a Flex Builder 3 license key if you wish to use it longer.
Flash Catalyst 4
A new addition to the Adobe stable, this tool is designed to fill the gap between Flash developers and designers in a way that the Flash designer program couldn’t. It allows the designer to turn their static picture designs into MXML code, which in turn can be used to skin the new Flex 4 components (sadly the term “gumbonents” has inevitably been dropped as the new components of now Spark components, rather than Gumbo ones.)
Having installed the beta and experimented with it for twenty minutes or so, my immediate reaction is one of “eh?” It doesn’t seem very intuitive to this developer. The tutorial info on the Adobe Labs is going to be essential reading.