[brc]

From this I see that C# as a UI language is not the future, that's hardly surprising.

There is no doubt that Azure is being pushed as a back-end, and front end is targeting web ui, metro, and other mobile devices. Silverlight never got market traction, so needs to be dropped.

But all that code on the Azure servers - that's all going to be .net based. Of that there is little doubt.

I think the problem here is conflating UI language usage with language usage in general. The bulk of app code is going into service layers, and they are all written on C#.