UPDATE: 9th June 2006. Windows Vista Beta 2 download information
Now available for download, if you want to get your hands on Beta 1 of the "Longhorn" client (now obviously called Windows Vista), it's available to both MSDN and Technet plus subscribers to download. Here's the link on Technet to the download sites. The home page for Windows Vista on Technet is here where you can find lots of IT Pro relevant material such as hardware purchasing decisions, deployment, security and management. Steven Bink also has some screenshots here. Remember though that this is the client, not the Longhorn server, which for now at least, retains the "Longhorn" code-name.