... i think this may become a potentially heated debate but really i'm just hoping to hear from somebody with Crystal Ball (i.e. not interested in what's Right, what's Wrong, what's Cool and what's not) - I just want to know "what's going to happen"
While I have no doubt we'll all be coding under "Desktop" environment for years to come, that "Desktop" isn't going away. However, is this a hint that .NET is legacy? That WinRT is the shiny new API that us lowly developer should all adopt? Is M$ giving us a hint (shivers up my spline this reminds me of Silverlight M$ is very generous when it comes to wasting our time)
what I am thinking is, worst come to worst, our investment in server side will remain "Desktop" - we only consider any "Metro" development for GUI side. GUI (metro/WinRT) and server (Desktop/.NET) communicates via socket - but not sure if wiring down byte array will work or not. I am pretty sure an Int32 (what about IList/IDictionary or even DataTable) gets wired back/forth correctly serializing/de-serializing using .NET DataContractSerializer, just not sure what further complication.
Also wonder how easy/difficult will it be to port .NET code to WinRT (For example I suspect while C# be same on both platform, but platform API such as File.AppendAllLines will probably be different). Remember porting your .NET dll's to now dead Silverlight? (That SL enforces generics? sh*t that's manual changes everywhere what were they thinking - I read somewhere WinRT too they will take away all the non-generic collections)