Too Lazy to do more than cut/paste links from RSS Bandit tabs :-(

Prism

In this post, Brian Noyes describes what he calls composite extensions.  It's based on Prism but is not tied to WPF, and describes a region manager like ability for Wonforms - http://www.softinsight.com/bnoyes/2009/04/22/CompositeExtensionsForPrism2.aspx

http://www.softinsight.com/bnoyes/2009/04/22/BuildingCompositeWPFApplicationsAtEvansvilleNETUsersGroup.aspx

http://elegantcode.com/2009/04/22/code-cast-26-prism-20/

Build Outlook style app - http://blogs.msdn.com/erwinvandervalk/archive/2009/04/29/how-to-build-an-outlook-style-application-with-prism-v2-part-2.aspx

WPF

The future of WPF at Mix09

WPF Coverflow control released

http://blogs.msdn.com/ivo_manolov/archive/2009/04/24/9566644.aspx - WPF test api

http://blogs.msdn.com/ivo_manolov/archive/2009/04/28/9574933.aspx - WPF Application Quality Guide v0.5 Released!

Getting ready for Windows 7

http://blogs.msdn.com/usisvde/archive/2009/04/25/walkthrough-to-get-your-applications-ready-for-windows-7.aspx

http://geekswithblogs.net/iupdateable/archive/2009/04/28/what-developers-should-be-doing-in-readiness-for-windows-7.aspx

Other

Mindscape twitter http://twitter.com/MindscapeHQ

Software Factories - someone's doing it - http://vincenth.net/blog/archive/2009/04/24/factory-overview-part-1-a-bird%e2%80%99s-eye-view-of-the-macaw-solutions-factory.aspx

http://azuregrid.codeplex.com/

Learn SL - http://silverzine.com/

http://blogs.msdn.com/paulcornell/archive/2009/04/20/visual-studio-2010-model-first-development.aspx - model in VS210 - create an Entity Data Model

All in one code framework - http://cfx.codeplex.com/

http://ayende.com/Blog/archive/2009/04/29/let-us-burn-all-those-pesky-util-amp-common-libraries.aspx - Ayende rant

Build a training course - http://coursebuilder.codeplex.com/

BizTalk 2009 released http://blogs.msdn.com/sudhir/archive/2009/04/28/microsoft-releases-biztalk-server-2009.aspx

Poco, Mef, and custom type systems. Are you ready to take the red pill? - more from Glenn Block - http://codebetter.com/blogs/glenn.block/archive/2009/04/27/poco-mef-and-custom-type-systems-are-you-ready-to-take-the-red-pill.aspx