For various reasons, as of October 2007 it has become more practical to host the list at SourceForge. Unfortunately, there are currently no public archives of the older mailing list.
Click here to subscribe to the "roadmap-general" general discussion list, hosted at SourceForge.net.
Since the new list is at SourceForge, it has archives.
There are currently no announce-only or developer-only lists. This may change in the future.