There are a few minor changes to the new Magic Infraction and Procedure Guide and the Magic Tournament Rules that were recently released. One such change that appears in the Tournament Rules update is that players can now look at the sideboard of any players they currently control. This change means that you can look at the sideboard of a player whose turn you are currently controlling via Mindslaver. There are a few other changes as well. You can find these new and other useful Magic tournament documents here:

http://www.wizards.com/wpn/Events/Rules.aspx?category=magic:thegathering

The changes will go into effect on January first of 2011.