Some sad news about the releases of these products.

First for the developers.  According to the website of ZDNet Whidbey and Yukon  will be push out to the first half of 2005.  This decision is made to ensure that they meet the high quality requirements of Microsoft's customers.  During the next months a second beta of Yukon and the first beta of Whidbey will be released.  At the end of 2004, a third beta of Yukon will become availlable.  The final product name for Yukon will be SQL Server 2005 and for Whidbey Visual Studio 2005.

then a bit about Longhorn.  According to Datanews only a beta version will be availlable during 2004.  The full Operating System will not be released before 2007.  This final release will only become availlable after Microsoft received feedback from beta trials and tailored the product.  It's more likely that Microsoft will deliver an interim update of XP and Windows Server 2003 before the Longhorn release.