If you’re a MSDN Universal Subscriber, you can now download Visual Studio 2005 Community Technology Preview March 2004 from the MSDN Subscriber Downloads area. From the download site:
Technology Previews are not “alpha” or “beta” quality. They should only be installed on dedicated machines as no guarantees are made that the hard drive will not require reformatting once the customer’s evaluation is complete. Microsoft will still release alphas and betas of Visual Studio 2005 ("Whidbey"). Developers can look to these releases to provide increasing features, quality, and stability.
Note: The Visual Studio 2005 Community Technology Preview is only available as a full DVD Image. The file size is approximately 2.6GB.
Michael Yuan's blog has some screenshots.