They put up a paper and some exploit code and from what I understand from the researchers, this is a very simple exploit to throw out to the public and very simple to execute an attack on ANYONE running Windows Vista and possibly XP SP2 and Server 2003. Also,
Linux and Mac users as always are safe. This just shows bad development and lack of competence on the Windows development team.
Enjoy Windows while it lasts, because its about too go away.