If you are new to the NRS scene, commit this to memory: always keep an eye out on Ed Boon's Twitter. Whenever we start to get closer to possible announcements, you'll see Boon posting teaser tweets suggesting some news coming in the future.
For the past few weeks, he's been pretty quiet on the gaming front, with his last relevant Tweet being the pre-announcement for IPS Season 2 weeks before the official announcement. Well, it appears we might have something to lookout for later this year, as Boon made a point of replying directly to this random tweet about a possible Fighter Pack 4. On one hand, this wish of that poor Twitter user may have been dashed to the ground. On the other hand, we have something else "kool" to be looking forward too, presumably the MK11 reveal.
It's worth noting that just dropping the "k" in place of a "c" isn't that big a deal for anyone with the NRS team. This very well may be just a reference to the joked about Fighter Pack 0, that would contain characters from Injustice: Gods Among Us. At the same time, we have E3 coming up and Combo Breaker right before that, so there's a few places in the next month that would be perfect for NRS to announce their next Mortal Kombat game. We'll just have to wait and see what happens, but you can be sure we will keep you guys posted as we get some more updates.
Ed Boon Possibly Starts His MK11 Shenanigans on Twitter