As expected, MSDN subscribers (sorry…not sure which subscriber levels) can now download the Visual Studio 2005 Beta 1 Refresh from the MSDN Subscriber Downloads site. The Refresh is the same as the previous beta release, but it also includes a Community Technology Preview (CTP) of Visual Studio 2005 Team System. The DVD ISO weighs in at 3.39GB.
Update: Rob Caron's blog entry provides more details about what to download in addition to the VS.NET 2005 ISO.
Update #2: Darren Jefford's blog entry provides some useful installation details.