My friend and colleague Joe Friend over in Word 2007 land (actually just upstairs from my office) has released the details of some awesome new functionalty enabled in the Word 2007 Beta 2:

http://blogs.msdn.com/joe_friend/archive/2006/05/12/595963.aspx

That's right - blogging from Word 2007 is here!  Joe's post is very detailed and includes some great screen shots.  I just started using the tool and it is wicked cool.  Stop by his blog and check it out!  Great job Joe, Krista, and the rest of the Word team.