Disclaimer: I don't work for Adobe.
But that is just my 2 cents from the outside looking in,
Yeah Chris, HTML will evolve with time. But for devices (tablet pc revolution-ipad, android based mobile phones, etc) and browsers with partial support. Designers using Adobe tools shouldn't be left out of the party(I'm a core designer though I get my hands dirty with some AS & FLEX codes when the need arises). Even if Flash Catalyst's future is tied to Flash Builder which is a good idea in the first place. Why did Adobe omitted drag n drop interaction? It just won't do it if we don't have it in the next official release. It defeats the purpose of the tool (I mean FC). By now Adobe should start warming us up for Multi-Touch Interactions in FC. Designers are dying to see these two features in the next release, else Adobe is performing cosmetic surgery to a patient that requires a cure. Adobe - keep up the good work.