Check out What's New for Visual F# in Visual Studio 2012
http://msdn.microsoft.com/en-us/library/hh370982.aspx
New features include:
Type Providers - OData (Open Data) Services - Database Connections such as SQL - Database Schema - Data specified by the Entity Data Model format - Web services in the WSDL format.
Query Expressions
Auto-implemented properties
Parameter Help
Enhanced IntelliSense
Create applications that run against the following versions of the .NET Framework: 2.0, 3.0, 3.5, 4, and 4.5