A placeholder page on the Adobe Labs website notes that the RawShooter Migration Tool - software for converting processing settings from the defunct Windows-only application to similar settings in Photoshop Lightroom - is due out today, March 5, 2007. It's expected to be a free download.
Update, March 5, 2007: Adobe has now postponed the tool's release; a new ship date is to be announced on March 9, 2007.