Async Tasks: Simplify Asynchronous Programming with Tasks;
Concurrency: Throttling Concurrency in the CLR 4.0 ThreadPool;
Async Agents: Actor-Based Programming with the Asynchronous Agents Library;
App Migration: Migrate Your ASP.NET 1.1 Apps to Visual Studio 2010;
Data-Bound Design: Create a Silverlight 4 Web Part for SharePoint 2010;
SQL Server and MapPoint: Making MapPoint 2010 and SQL Server Spatial Work Together;
The Working Programmer: Multiparadigmatic .NET, Part 1;
UI Frontiers: Touch and Response;
Cutting Edge: Better Web Forms with the MVP Pattern;
Security Briefs: The MSF-Agile+SDL Process Template for TFS 2010;
Test Run: Request-Response Testing Using IronPython;
Going Places: IronRuby on Windows Phone 7.
Read more: MSDN