From Jared’s blog:

Here are some of the articles I’m currently planning for the series:

• User Interface – New and Different Controls, Porting UI, Form Factors
• View States using Visual State Manager – Sample for handling Portrait and Snapped views using VSM
• Application Framework – WinRT, Components, Asynchronous Code
• Missing or Different – APIs, Notification, Tile, Isolated Storage
• New Features – Timed Trial, In-App Purchase, Cloud Sync
• System Integration – System Dialogs, Settings Pane, Permissions, Contracts
• Localization – Supporting multiple languages
• Media and Games – Local Folders, Background Audio, DirectX + XAML

via Windows Phone to Windows 8 « The Good, the Bad and the Mobile.