Já com os 40 posts à vista dedicados ao tema do desenvolvimento para Windows Phone 7, aqui vão mais uns quantos links que achei importante partilhar:
Launchers and Choosers (video)
http://www.silverlight.net/learn/videos/windows-phone/launchers-and-choosers/
Silverlight On Mobile : Launchers in Windows Phone 7
http://pendsevikram.blogspot.com/2010/10/silverlight-on-mobile-launchers-in.html
How to install the Windows Phone Developer Tools on Windows Server 2008
http://blogs.msdn.com/b/astebner/archive/2010/05/02/10005980.aspx
Windows Phone 7 – Application Lifecycle – Ocean for the Phone
http://karlshifflett.wordpress.com/2010/10/17/windows-phone-7-application-lifecycle-ocean-for-the-phone/
Windows Phone 7 Line of Business App Dev :: Moving your WCF REST + JSON Service to Windows Azure
http://robtiffany.com/azure/windows-phone-7-line-of-business-app-dev-moving-your-wcf-rest-json-service-to-windows-azure
Netflix Browser for Windows Phone 7 - Part 1 (pivot, panorama, navegação, OData, …)
http://www.codeproject.com/KB/windows-phone-7/NetflixBrowser.aspx
Help! Can't unlock my Windows Phone 7, can't deploy my XAP file, or can't run my app! (troubleshooting…)
http://blogs.msdn.com/b/velloso/archive/2010/10/15/help-can-t-unlock-my-windows-phone-7-can-t-deploy-my-xap-file-or-can-t-run-my-app.aspx
Three Reasons Developers Should Use Expression Blend (será que querem desculpas para continuarem a fazer aplicações feias?)
http://channel9.msdn.com/Blogs/SlickThought/Three-Reasons-Developers-Should-Use-Expression-Blend
Using the Rating Control in Windows Phone 7
http://wp7wonders.wordpress.com/2010/10/15/use-the-rating-control-in-windows-phone-7/
Windows Phone 7 Developer Resources
http://www.jeffblankenburg.com/page/Windows-Phone-7-Resources.aspx
Anti-aliased Lines And Optimizing Code for Windows Phone 7–First Look
http://nokola.com/blog/post/2010/10/14/Anti-aliased-Lines-And-Optimizing-Code-for-Windows-Phone-7e28093First-Look.aspx
Flickr API for Windows Phone 7 – Part 11- Group Membership
http://dotnet.dzone.com/articles/flickr-api-windows-phone-7-–-9
Flickr API for Windows Phone 7 – Part 12 – Group Pools
http://dotnet.dzone.com/articles/flickr-api-windows-phone-7-–-10
Localize a Windows Phone 7 Application
http://wp7wonders.wordpress.com/2010/10/17/localize-a-windows-phone-7-application/
Monetize your Windows Phone 7 Apps (com o MS Ad SDK)
http://advertising.microsoft.com/mobile-apps
Test Driven Development (TDD) and Windows Phone 7
http://simonguest.com/2010/10/18/test-driven-development-tdd-and-windows-phone-7/
Fiddler and the Windows Phone 7 Emulator
http://blogs.msdn.com/b/fiddler/archive/2010/10/15/fiddler-and-the-windows-phone-emulator.aspx?utm_medium=Twitter&utm_source=Shared
PhoneApplicationService.ApplicationIdleDetectionMode Property (importante para o App live cycle)
http://msdn.microsoft.com/en-us/library/microsoft.phone.shell.phoneapplicationservice.applicationidledetectionmode(VS.92).aspx
Azure + Bing Maps: Expose data to the world with WCF Data Services (também deve poder ser consuimido com WP7 
)
http://blogs.msdn.com/b/windows-azure-support/archive/2010/10/13/azure-bing-maps-expose-data-to-the-world-with-wcf-data-services.aspx
Using reactive extensions with WebRequest
http://zetitle.wordpress.com/2010/10/14/using-reactive-extensions-with-webrequest/
Important Info for WP7 Application Developers (relacionado com Marketplace)
http://chriskoenig.net/2010/10/14/important-info-for-wp7-application-developers
Getting your App published on Windows Phone Marketplace
https://rd3d2.wordpress.com/2010/10/12/getting-your-app-published-on-windows-phone-marketplace/
When a WP7 app fails the Marketplace submission process, it looks like this...
http://www.wpcentral.com/when-wp7-app-fails-marketplace-submission-process-it-looks-this
Failed first attempt at WP7 application submission (updated with reasons)
http://www.pchenry.com/Home/tabid/36/EntryID/360/Default.aspx
Beware of .cache files on IsolatedStorage
http://blogs.ugidotnet.org/corrado/archive/2010/10/15/beware-of-.cache-files-on-isolatedstorage.aspx
Make Your PC Look Like Windows Phone 7 (não, não tem nada a ver com desenvolvimento!)
http://www.howtogeek.com/howto/13901/make-your-pc-look-like-windows-phone-7/
Tip 4–Don’t use ‘washed out’ colours for your Marketplace background.
https://rd3d2.wordpress.com/2010/10/14/tip-4dont-use-washed-out-colours-for-your-marketplace-background/
Professional Windows Phone 7 Application Development: Building Applications and Games Using Visual Studio, Silverlight, and XNA (& outros na Amazon, restam esperar que cheguem à Amazon.co.uk!)
http://www.amazon.com/Professional-Windows-Phone-Application-Development/dp/0470891661/ref=sr_1_8?ie=UTF8&qid=1287016757&sr=8-8
31 Days of Windows Phone 7 (continuação)
Day #12: Vibration Controller
Day #13: Location Services
Day #14: Tombstoning
Day #15: Isolated Storage