Microsoft has made the slides available on slideshare.
You can also download the slides material here.
You can download the sample code for C++ Interop with WinRT here.
Visual C++ and Native Development (C++ Renaissance) and .NET Technologies
Because a lot of stackoverflow.com threads explain that Windows Runtime Components should be made with C++/CX, I have post my sample link on their site to make the promotion of my sample using WRL with standard ISO C++.
I have uploaded a Windows C++ sample to illustrate how to develop WinRT components using WRL and standard ISO C++. It demonstrates how to create async method and the usage to return a vector of string and a vector of int using a template based vector container implemented using std::vector.
Here is three new technical articles about how to write WinRT components using Windows Runtime Library (WRL) with Standard ISO C++ but not C++/CX. There are few documentation about that.
It is all about how to implement those COM components using the WRL template library.