ServerSide.com has an article on the Macromedia MX launch. However, I am not posting because of the article, but because of the comments posted from the Java community to the article. A lot of the developers seem to be trying to undestand where Flash fits in within a client / server architecture, and whether or not Flash is capable of being an application front end.
Pay particular attention to the comments by Sean Neville (Macromedia engineer who works on Flash Remoting and Jrun). He gives some really good info on what exactly Flash Remoting is, and how Flash fits into a client / server architecture.