I think a few thousand .NET developers let out a collective sigh that C# and VB.NET will have a place in the next version of Windows. But HTML5 seems like it will be a huge, if not the principal development framework in the next version regardless (Microsoft themselves seemed to only demo HTML5 apps).

One must wonder if Microsoft is pushing HTML5 or is HTML5 pushing Microsoft. I know at my workplace web apps have pretty much displaced everything else (other than IDEs, I guess) - this trend started a long time ago.

I'd be interested to see what extensions WinRT provides to JavaScript and if any of these extensions can be standardized in the W3C. That might not be Microsoft's strategy though.