Menurut pengumuman [1]:

Today I’m excited to announce that we’ll be providing this with the .NET 3.5 and VS 2008 release later this year.

We’ll begin by offering the source code (with source file comments included) for the .NET Base Class Libraries (System, System.IO, System.Collections, System.Configuration, System.Threading, System.Net, System.Security, System.Runtime, System.Text, etc), ASP.NET (System.Web), Windows Forms (System.Windows.Forms), ADO.NET (System.Data), XML (System.Xml), and WPF (System.Windows). We’ll then be adding more libraries in the months ahead (including WCF, Workflow, and LINQ). The source code will be released under the Microsoft Reference License (MS-RL).

You’ll be able to download the .NET Framework source libraries via a standalone install (allowing you to use any text editor to browse it locally). We will also provide integrated debugging support of it within VS 2008.

Sepertinya Microsoft bakal mengikut sertakan source code library .NET Framework bersamaan dengan rilis .NET 3.5 dan VisualStudio 2008. source code ini dirilis dengan lisensi Microsoft Reference License [2]

Kalo source code di berikan tapi hanya sebagai referensi alias NOT Open Source dan tidak bisa diapa2-in. trus untungnya apa???