Rumors, gossips, maybes... I jumped ship and went to PS4. It took me 1 month to learn how to play with a controller as I played MKKE and IGAU on keyboard (like a virtuoso piano player, sometimes my fingers were all over the place

). DS4 is actually pretty good for MKX, but after the first session I was desperate as I struggled even in Tutorial. I don't even know when was the last time I held a contoller before.
So I re-learned the whole game from scratch, it was like April 2015 all over again. By the time MKXL were out, I was ready to go. The learning process was fun, the game is fun. My first console ever and so far, so good. But I still won't forget what NRS have done here. Even if WB bosses them around, they owe an apology to the PC community.
But it is still possible that the silence is good news if anybody is still interested. I visit TYM once in a while and there's a PC topic too. I don't want to get anybody's hopes up but I found this:
I made a call to the WBIE Support line and asked about the future of MKX on PC. The rep told me the only thing they know for certain is, "MKXL and the Enhanced Online functionality will not be available for now". He actually seemed very optimistic that it could show up in the future, even giving me his best guess at when("if I had to guess I would say sometime before the holiday season" he said). After that, I asked about future balance patches to which he responded, "You can expect to receive balance patches and bug fixes as normal."
So, don't give up yet. Try to keep this conversation going for as long as possible.
I don't know how real is this, but it sounds like WB. If there's money in it, they want to make as much as they can. I can even say that maybe they learned from past mistakes and didn't want to make the same mistake here once again so they haven't launched MKXL yet because they want to implement GGPO flawlessly this time and iron out all issues before launch.
If that's the case, and it's a big IF, then it's not a bad thing after all.
But playing on PS4 also has its perks. No Steam issues, no GPU driver issues, no different hardver, different experience issues. Don't do it just for MKX(L), but being a PS4 player is a fun experience so far and you have a complete system for a price of a GTX970. And I, for one, prefer to play without issues rather than have a 4k resolution and a broken game.