According to an anonymous source Mortal Kombat 12 is purported to be a Greatest Hits celebration of the recent trilogy, combining the roster from all three games (minus the licensed guest characters) into one big 50-character roster. The user source claims that the game will essentially be a ported version of MK11 but simply with a ton of more characters including unplayable bosses. That likely means the game won’t go through a massive overhaul as each installment does and will have the same mechanics as MK11. Returning MK11 characters are said to play the exact same way, down to the movesets
that MK12 is indeed going to be a mishmash of the latest trilogy running on the same MK11 engine. Both posts claim that the game will be revealed next week in the Game Awards.

The Mortal Kombat franchise has existed for almost three decades by now, and in that time, it's spawned a list of highly popular and recognizable characters. Foundational to that popularity is that this cast all met or continued to meet at a particular moment when Earthrealm's future seemed to be at its most bleak.
As with any anonymous internet rumor, it’s always good to take this with a grain of salt but the story is nonetheless very interesting. MK11 was an absolute blockbuster of a game, selling higher than any fighting game on the market. That Warner Bros. would just opt to make another version of it isn’t necessarily surprising.

It's worth noting that all of the games are built upon a great deal of history that precedes the events of even the first Mortal Kombat game. One such legendary character important to the early history of the Mortal Kombat series is the Great Kung Lao.

His life was important in altering the trajectory of the fate of Earthrealm, and in death his importance to the world was made even more important. We'll discuss this character and play around with some interesting possibilities regarding a story that is different for him in this video.

Both the Mortal Kombat and Injustice franchises are still yet to come out with new installments. However, some fans suggest that a new Mortal Kombat game is possibly in Development. The reason behind this speculation is because of a job listing fans found for NetherRealm Studios. These listings that fans have been sharing specifically pertain to a martial arts fighting game. Thus, the assumption of a new Mortal Kombat game being developed.

No official announcements for Mortal Kombat 12 or Injustice 3 are out yet, however, a job listing may have just gotten Mortal Kombat 12 leaked, or it may be Injustice 3 leaked.
Both the Mortal Kombat and Injustice franchises are still yet to come out with new installments. However, some fans suggest that a new Mortal Kombat game is possibly in Development. The reason behind this
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https://www.youtube.com/watch?v=2gi3UJAyxpc