Visual Studio 2008 and .Net Framework 3.5 SP1 Beta was announced today after being kept as a secret for some time.

Here is the list of available downloads as part of this release:

• Microsoft Visual Studio 2008 Service Pack 1 Beta
  • Microsoft .NET Framework 3.5 Service pack 1 Beta – Full Installation
    • Microsoft .NET Framework 3.5 Service pack 1 Beta – Web Installation
      • Microsoft .NET Framework 3.5 Client Profile (Beta)
        • Microsoft Expression Blend 2.5 March Preview Refresh
          • Microsoft Visual Studio 2008 Express Edition with SP1 Beta
            • Visual Studio 2008 Shell (integrated mode) with Service Pack 1 Beta Redistributable Package
              • Visual Studio 2008 Team Foundation Server Service Pack 1 (Beta)</ul>