On November 3, 2009, I posted the Launch slide decks for the Exchange Server 2010 Track to my SlideShare site.  I was informed by a couple of my team mates that they have posted the Launch slide decks for the Windows 7 and Windows Server 2008 R2 tracks to their SlideShare sites as well.

Windows 7 Decks: http://www.slideshare.net/keithcombs 

Windows Server 2008 R2 Decks: http://www.slideshare.net/chenley 

Enjoy.

Harold Wong