Information about next SQL Server version "Katmai" is dripping

Both RegDeveloper and ZDNet report (and numerous MSDN blog posts, of course) that SQL Server's next version, currently only greeted with the codename "Katmai" should be out next year. There are also rumors floating around that SQL Server 2005 Release 2 (R2) or something the like might be on the horizon. Sounds again a busy (fiscal) year for Microsoft with new Visual Studio, Windows server operating system and now SQL Server in the works.