Miguel de Icaza has announced the release of Mono 3.0 for improving the Microsoft .NET capabilities on Linux and other operating systems.
Key highlights for Mono 3.0 include a C# async compiler, a unified C# compiler for all profiles, a 4.5 async API profile, integration of new Microsoft open-source stacks, a new high-performance garbage collector (SGen), and many run-time and class library improvements. The newly integrated Microsoft open-sourced stacks include ASP.NET MVC 4, ASP.NET WebPages, Entity Framework, Razor, and System.JSON.
Full details on the Mono 3.0 changes are available from the release notes
. Miguel mentioned the new release from his blog