I am very excited to share that Microsoft announced the public beta release of Office 2010, SharePoint Server 2010, Visio 2010, Project 2010, Office Web Apps for business customers, and Office Mobile 2010. If you are developing application based on Outlook; then here are few links related to developing applications for Outlook 2010: What's New for Developers in Outlook 2010 Programming the Outlook 2010 Solutions Module Extending the User Interface in Outlook 2010 If you are looking for resources

If you have seen the error below when using objects from OOM in .NET 2.0 code then the information that Mason posted recently will explain a lot. The key to avoiding this error is to use the interfaces in OOM not the CoClasses. Mason explains why in his post... Unable to cast COM object of type 'System.__ComObject' to class type 'Microsoft.Office.Interop.Outlook.MailItemClass'

This post by KC Lemson provides some good sample code to view the internet headers of mail messages in Outlook but also illustrates the huge advantage the Outlook 2007 object model provides with the PropertyAccessor object. Notice the differences between the Outlook 2007 code which is done completely through OOM compared to the Outlook 2003 code which requires the use of CDO 1.21 to access properties on the message.

If you have COM AddIns written in Outlook 2003 and earlier that you want to know what we are doing to have them run in Outlook 2007 as well or you are going to write an AddIn for Outlook 2007 then you should read this post by Ryan Gregg who is an Outlook PM. Ryan talks about the backward compatability effort in Outlook 2007 and his work with ISVs to support AddIns in Outlook 2007... Ryan also talks about some changes to exception handling in Outlook AddIns for the technical refresh. If you are an

The Office 2007 Product teams have begun posting public information on the new Office suite including the Outlook 2007 team giving an overview of what is new for developers in Outlook 2007… “…Outlook 2007 object model includes more than 85 new objects and the size of the object model has more than doubled…” What is New for Developers in Outlook 2007? (Part 1) http://msdn2.microsoft.com/en-us/ms772422(office.12).aspx What is New for Developers in Outlook 2007? (Part 2) http://msdn2.microsoft.com/en-us/ms772423(office.12).aspx

The Exchange Team's Blog has a great post on how certain time zones with variable daylight time shifting affect Outlook... ... Time zones are an important thing to keep in mind when working with appointments. We get cases sometimes related to preceived bugs in CDO 1.21 or Outlook Object Model were appointments appear to be off their scheduled times. This is more often than not related to one of the time zones mentioned in this post...

Ryan Gregg, an Outlook 12 PM, gives an enticing preview of the enhancements and new features of the Outlook Object Model to be available in O12. ...At first glance this is very exciting. I look forward to these changes, improvements, and additions as they seem to hit on a lot of customer requests.