Some Wine Mono highlights, if it's not too late:

Builtin assemblies in Wine Mono and those installed in the Windows Global Assembly Cache now take priority over assembly dll's located in the application's directory. Internal assemblies have been renamed to prevent namespace collisions with applications, for example the builtin FNA.dll is now WineMono.FNA.dll.

The PresentationFramework.Aero2 and System.Windows.Controls.Ribbon assemblies have been added.