The Windows Phone Training Kit has been updated with the RTM bits. 

It's gotten even bigger with 5 new labs:

  • Using Silverlight Map Control and Bing Services
  • Building Silverlight Applications Using Panorama and Pivot Controls
  • Catapult Wars - A 2D Physics Game
  • Using Choosers and Handling Tombstone in XNA Framework Games
  •  3D Game Development with XNA Framework