GoDiagram compatibility with Windows8/8.1


We are moving to Window8/8.1 platform; the application is targetting .Net framework 4.0 and one of the application feature is using GoDiagram 4.0
Can you please confirm whether GoDiagram 4.0 is compatible with Windows8 and 8.1?
If it is not compatible and there is recommendation to upgrade for Windows8, then to which GoDiagram version we should upgrade to?

We support platforms that Microsoft supports, since we rely entirely on .NET. For Windows 8, MS supports .NET 3.5 and up.