The BizTalk Server Developer Center has been updated to highlight integration with WF and WCF. Finally Microsoft has written a view articles on how they will include and use WF an WCF in BizTalk. Some things of BizTalk will cover the same features (e.g. BRE is very close related to WF).
Reference Application Pack for Retail This white paper, along with the sample application, showcases integration using service orientation with BizTalk Server 2006, Windows Communication Foundation, and Microsoft Business Scorecard Manager.
Windows Workflow Foundation Overview Windows Workflow Foundation is the programming model, engine, and tools for quickly building workflow-enabled applications on Windows. It consists of a namespace, an in-process workflow engine, and designers for Visual Studio 2005.
Summary Hopefully MS will give us some more samples on how to use it in a production environment.
Eilene Hao, Program Manager for SharePoint Workflow finished her complete blog series about developing SharePoint workflows in Visual Studio (VS). Lots of people are asking a lot of questions about this issue and a lot of them seem to have common points of confusion. With so much information out there, it’s sometimes hard to see the big picture amidst details and know what’s really important or how to put all the pieces together.
She created a more cohesive guide of key concepts, and converted it to a blog series that she posted Microsoft SharePoint Products and Technologies Team Blog. She started with some fundamental workflow terminology and critical architectural concepts, then go over the steps for developing a workflow, covering the most common questions and points of confusion, and noting pitfalls and tips for success along the way. Understanding the material in this series will hopefully equip you with the right tools and knowledge to solve or work around a lot of problems that you encounter.
Note that this is not a replacement for the SDK, and you should still look there for the finer details. She highlighted the major concepts so that you have a sense of what to look for.