Seen today: Eudora's plans for Max OS X Tiger changes. I don't have Tiger yet, just wating for new iBooks to get released with it already installed.
Tidbit:
We are excited about the new technologies in MacOSX Tiger, including SpotLight and WebKit HTML display/authoring. We are currently reworking Eudora to take advantage of these technologies, as well as converting it from Carbon to Cocoa, to take advantage of Cocoa's status as Apple's preferred environment.