This is only a rumor from internet gamers. The rumor says: This game will be the final saga of Mortal Kombat videogames between Liu Kang(50 years old) and Lord Kazoo(398000 years old). This is the ultimate project of Ed Boon for Mortal Kombat series and for Midway videogames. It comes on September 2011.
"You are not an Inmortal, the Mortals are now the Mortal Kombat!"