There have been long persistent rumors of the Sony exclusive Kratos from God of War fame making an appearance in next year's Mortal Kombat game, but most wrote these off as wishes of fans who wanted to mix two brutal worlds together. Kratos has already stepped inside the world of fighting games once, appearing in Soulcalibur: Broken Destiny last year but never before has he seen action on a medium equal to his own in violence and carnage.
Kotaku is reporting on the rumors today, the latest of which is the possibility of Kratos being confirmed as a playable cast member (though without a story mode) in January 2011's edition of OPM. We will of course be awaiting the magazine itself for confirmation, but God of War director and designer David Jaffe is confirming via his Twitter account that Kratos is indeed in the game.
Though this story does remain technically unconfirmed, the fact a crucial part of God of War's staff is speaking openly about Kratos being in the game seems like as close to a confirmation as possible. We will keep you updated on this story when more information becomes available.