WPF/XAML helping VS2010 Extensibility
Happy to read Soma’s highlight of the improvements to extensibility for VS2010 including:
WPF is now a first class citizen within our extension templates. Right away, you can be up and running with a WPF tool window. Likewise it is easy to use XAML to design and add a custom piece of UI to the Visual Studio Editor. Extending the Editor has gotten significantly simpler and more robust. Previously, trying to do something as simple as getting the caret position took several lines of ugly interop code. With the new editor APIs you can do it in one line, without a trace of interop.
On top of that, I was excited to see that OPC plays a part as well:
Deploying your extension is no longer rocket science. There's no need to build an MSI to share your extensions. The extension project templates all generate a VSIX file. VSIX is our new deployment unit that leverages the Open Packaging Convention zip format and takes advantage of xcopy deployment of your extensions.
Check out that and more at: http://blogs.msdn.com/somasegar/archive/2009/12/09/creating-extensions-for-vs-2010.aspx