MS has some new developer downloads avaliable for Office 11 beta 1
Microsoft Word XML Content Development Kit
Intended use: This is highly recommended
Expected or anticipated utility: The Microsoft Word XML Content Development Kit provides an overview and reference information on XML in Microsoft Word, the user interface, customer-defined schema support, the WordML schema, and the Schema Library, as well as a sample. It is for solution developers.
Smart Documents & Smart Tags Development Kit
A set of documentation and samples describing smart documents and what is new with smart tags.
Intended use: Optional but highly recommended
Expected or anticipated utility: Facilitate developers who want to create smart documents and smart tags
Office Users Research Content
A set of documentation and schemas describing the research service in Office 11.
Intended use: Highly recommended
Expected or anticipated utility: To help research providers who want to provide research content to Office users