The Exchange 2010 protocol documentation set has been updated to version 8.0. This version is for “Exchange Server 2010 SP1 RTM”. The documentation describes in detail each protocol used by Microsoft Exchange Server. You can retrieve the individual documents or the complete set in one archive  here.

In addition, the Microsoft Exchange Server 2010 and Outlook 2010 Standards documentation set has been updated to version 7.0.The documents describe Exchange 2010 and Outlook 2010 support for industry standards and RFCs, like IMAP4 and POP3. You can retrieve the individual documents or the complete set in one archive here.

And finally, the Forefront Online Protection for Exchange (FOPE) 10.1 Product documents have been released. This set contains the following:

• New Features Guide, containing information on the features and changes for FOPE, including the Directory Synchronization Tool, new company filtering service settings, domain enhancements, and enhanced reporting features.

• Administration Center User Guide, containing information fore using FOPE’s Administration Center, the web-based admin tool to create reports and customize FOPE services.

You can retrieve the FOPE product documents here.