It would seem Warner Bros. Interactive is looking to re-release Mortal Kombat, perhaps bundled with all of the DLC characters that have been released to date.
The news comes from a recent rating that popped up from the BBFC, the British Board of Film Classifications. They also rate video games and have been known as a credible source for leaks in the past.
February 17 is the listed launch date for this potential re-release. But right now, outside of the date and speculation, there isn't much else to go on. Additional details are expected to be forthcoming.