Visual Studio .NET 2003 SP1
You might argue that this is 3 years late, but at least they finally released a service pack for Visual Studio 2003.
Apparently, the service pack for 2005 is due later this year - and not before time too - while the features of the new environment are fantastic, I’m seeing it crash with alarming regularity. Not the stable development environment you would expect.
Windows Live Writer
A new desktop application for writing blog entries. Quite a nice WYSIWYG interface. Will be interesting to see how good the integration with Blogger is.
This is a .NET library that provides a nice, managed framework for interacting with IIS