You will be able to access the .NET framework by exporting a type library for each of the assemblies of .NET. Then you will be able to use the .NET classes like any COM class. The utility that shipped with the technology preview is called tlbexp.

You will also be able to use your Fox COM Components in languages that support the CLR (VB.NET, C#, etc). The utility for this is tlbimp. Both of these utilities allow you to work in both worlds (COM and .NET) by going through the Interop layer of .NET. MS has worked very hard at limiting the amount of overhead that this layers has.

--Matthew