Surprisingly(Not so much though after EU’s stand against M$), Microsoft has disclosed 14K pages of documentation that describes underlying protocols for Office 2007, MOSS 2007 and Exchange Server 2007. According to news, this is just a first phase of 3 phased plan. Microsoft will gather feedback from the developer community till June, and then the final version of the documentation will be published.
For detailed news check out this link : http://www.theregister.co.uk/2008/04/08/microsoft_posts_protocol_documents/
