The BUILD 2012 conference includes a number of game developer related presentations which are available on Channel 9.

 

Windows Store apps

Designing games for Windows 8

Core technologies for Windows 8 games 

Developing a Windows Store app using C++ and DirectX

Graphics at the core of Windows 8 and your app

Performance tips for Windows Store apps using DirectX and C++

Graphics with the Direct3D11.1 API made easy

Gaming reimagined: Gaming case studies

Developing, deploying, and monetizing Windows Store games with Unity

  

Visual Studio 2012

DirectX Graphics Development with Visual Studio 2012

Create Cross-platform Apps using Portable Class Libraries

The Future of C++

 

Windows phone 8

Windows Phone 8: Native C/C++ Game Development

Windows Phone 8: Performance & Optimization for Developers

How to Leverage your Code across WP8 and Windows 8

 

Xbox Live

Xbox Live on Windows 8 Deep Dive 

Building Cross-Device Xbox Games