While it may very well be Ed Boon up to his typical teases, what seems like a harmless tweet could be the precursor to something more for the studio behind Mortal Kombat and the Injustice series.
With James Gunn announcing the release date of Guardians of The Galaxy Vol. 3, Ed Boon had this little observation on Twitter:
This only feeds into the recent rumours that NetherRealm is indeed working on a fighting game using Marvel properties. Reported last week by Stealth Optional, noted leaker Daniel Richtman claims that NetherRealm Studios is working on a Marvel fighting game for next-gen consoles. In fact, Richtman states that the title is already in production at the studio.
Again, this is one of those salt shaker rumours that Ed Boon may be seizing upon to mess with people, but you never know.