Where can I learn about "Yukon," or SQL Server 2005?

There are several sources of information available about SQL Server 2005, now that the PDC has opened up. 
 
From Microsoft's site: 
 
    Microsoft SQL Server:  
  
    Microsoft SQL Server: Downloads

    http://www.microsoft.com/presspass/press...
   
From SQL Server Magazine: 
 
    Top Yukon Features 
 
    Exploring Yukon Territory 
 
    What's New in Yukon T-SQL 
 
And watch every issue of the print edition, which invariably has articles revolving around new features in Yukon. 
 
Also see this Euan Garden 'What's new in SQL Server Yu... interview from itwriting.com. 
 
And finally, we have a dedicated section for frequently asked questions about SQL Server 2005: 
 
    ASPFAQ : SQL Server 2005
 
Please don't ask when the release date is. As with most MS products this early in their life cycle, it will ship "when it's ready." All we know is that Beta 2 will arrive sometime in June, and RTM is scheduled for late 2004 / early 2005.