This is Windows Client Developer roundup #20.

The Windows Client Developer Roundup aggregates information of interest to Windows Client Developers, including WPF, Surface, Windows 7, XNA, Windows Forms, Silverlight and Windows Phone. If you have something interesting you've done or have run across, please send me the URL and brief description via the contact link on my blog.

Of course, the big news items this week were the releases. Here's what was released this week:

• Visual Studio 2010
• .NET 4, including WPF 4, ASP.NET 4, MVC 2, WCF Data Services 4/OData. Oh, and MEF is in the box now :)
• Silverlight 4
• Silverlight 4 Tools RC2 for Visual Studio
• WCF RIA Services RC
• Expression Blend 4 RC
• The Microsoft Surface toolkit for Windows touch (beta)

One caveat: If you're working with Windows Phone 7 Dev, do not upgrade to the release of VS2010 yet. Hold off until the wp7dev team releases a new build of the tools.

WPF, VC++, Visual Studio 2010 and Silverlight 4 Launch Posts

Visual Studio 2010, WPF 4, and .NET 4

• WPF 4 Release: A guide to the new features (Me)
• What's new in the .NET Framework 4 Client Profile RTM (Client Profile and Perf Blog)
• What's new for Performance in WPF in .NET 4 (Client Profile and Perf Blog)
• Visual Studio 2010 Released (Scott Hanselman)
• Visual Studio 2010 is Now Available (C++ info) (Visual C++ Team Blog)
• A Tour of .NET with Scott Hanselman (Channel 9)

Silverlight 4

• Silverlight 4 Released. Availability of tools announcement (Tim Heuer)
• Silverlight 4 Released (ScottGu)
• Backward Compatibility with Silverlight 4 Applications (Tim Heuer)
• Silverlight 4 Release: Happy Third Birthday, Silverlight! (Me)
• Silverlight 4 Launch Notes (Daydreaming Crocus)

WPF and Silverlight General

• WinForms to XAML UI Converter (Rob Relyea)
• • Expect to see a deeper follow-up on this, soon.
• The Microsoft Surface Toolkit for Windows Touch Beta (WPF) (Surface Blog)
• Obfuscating Silverlight for free (Andy Beaulieu)
• WPF: TimeLine Control (Sacha Barber)
• Simplify your Binding Converter with a Custom Markup Extension (Walt Ritscher)
• WPF: Concatenating multiple fields (bindings) (Olaf Rabbachin)

Visual Studio 2010

• Blind Comparison VS2008 vs VS2010 (WPF Text Blog)
• Keep Offline Help Up-to-Date in Visual Studio 2010 (WPF SDK Blog)
• Custom Extension Types with VSIX (Visual Studio Blog)

XNA

• XNA Effects - ASCII Art in 3D (Coding4Fun)
• Viewport tweaks in XNA Game Studio 4.0 (Shawn Hargreaves)
• ElapsedRealTime and TotalRealTime in XNA Game Studio 4.0 (Shawn Hargreaves)
• Jitter Managed Physics Library
• Premultiplied alpha in XNA Game Studio 4.0 (Shawn Hargreaves)

Windows Phone 7

• Adobe Illustrator design templates for wp7 (Clarity Consulting)
• Bing Maps + OData + Windows Phone 7 - Nerd Dinner Client for WP7 (Anoop Madhusudanan)
• WP7: ApplicationBar CTP Issue (Peter Foot)
• KIN - Microsoft's Newest Move in Mobile (Windows Phone Blog)

Windows 7

• Windows 7 Programming Guide - Libraries Update (Yochay Kiriaty)
• Windows 7 Federated Search (Yochay Kiriaty)

Fun

• Master of Business Card Throwing (YouTube - this is amazing!)
• Rhythm created by synchronized dropping of objects (Vimeo)
• Top 100 Funniest Google Street View Images (via @Tableteer)