http://blogs.msdn.com/b/dsyme/archive/2011/09/15/f-3-0-developer-preview-now-available.aspxOver on the F# team blog we have announced the Developer Preview Release of F# 3.0 . The Visual Studio F# team is excited to announce a preview release of F# 3.0 as part of the Visual Studio 11 Developer Preview , announced on Tuesday at the //builden-GBTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)