New information on Flash Catalyst (formerly Thermo) and Flex Gumbo on Adobe Labs site

Adobe Flash Catalyst
A new professional interaction design tool for rapidly creating application interfaces and interactive content without coding.

Gumbo
The next generation of Adobe Flex, including both the next generation of Flex Builder and the next generation of the open source Flex SDK.

There is also some information on the Alchemy preview:
(Nov 17) A research project that allows users to compile C and C++ code into ActionScript libraries (AVM2).