Don Syme's blog announcement:
http://blogs.msdn.com/b/dsyme/archive/2010/11/04/announcing-the-f-compiler-library-source-code-drop.aspx?wa=wsignin1.0
Don's PDC10 presentation: The Future of F#
http://player.microsoftpdc.com/Session/04092962-4ed1-42c6-be07-203d42115274
Microsoft F# Developer Center
http://msdn.microsoft.com/en-us/fsharp/
F#, August 2010 Community Technology Preview
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=f8c623ae-aef6-4a06-a185-05f59be47d67&displaylang=en
F# PowerPack, with F# Compiler Source Drops
http://fsharppowerpack.codeplex.com/