The Wizards of the Coast page announced the pre-release of its upcoming Phyrexia set for Magic: The Gathering.  These events will give players the opportunity to try the expansion a week before it goes on sale.  Players will also receive an exclusive Sheoldred, Whispering One promo card while supplies last.  The events will take place May 7-8, 2011.  For more information see the announcement on the WotC web site.