Reportedly a 500MB download, bringing the total size of all updates to more than 10.7GB, Mortal Kombat X update 1.13 was released today on PlayStation 4 and Xbox One.
In terms of general fixes, NetherRealm Studios removed several possible online desyncs, corrected some brutalities that had issues with rollback, made some corrections to movelist frame data, and more, as you can see in the patch notes:

General Gameplay Fixes

There is no longer an addition frame of input delay when simulate online delay is on and should now better match online play
Removed several camera, sound, and particle glitches due to rollback
Removed several possible online desyncs
If a breaker is initiated while the attacker is below ground it will no longer animate faster than normal Some knockdown reactions now longer reset the buffered combo damage scaling used by unavoidable off the ground situations
Fixed a bug which could cause controller configuration options to be reset for a round after a rollback in an online match
The timer in survivor koth now starts at 150 seconds
Corrected some brutalities which had some issues with rollback
Made some corrections to movelist frame data
Some hotfix changes from the previous patch are now being applied correctly
AI tweaks for the kp2 characters
Multiple attacks hitting on the same frame should no longer sometimes break though Sonya’s, Subzero’s, Triborg’s (CyberZero) X-Ray parry

There’s also a number of character specific change...