In a recent interview with 4Gamer, Capcom has confirmed Marvel vs Capcom Infinite will be arriving in late 2017.
In the translation provided by Eventhubs’ MajinTenshinhan, Tomoaki Ayano when asked about Capcom’s plans for 2017 replied that Marvel vs. Capcom Infinite will come in the later half of 2017.
This is a big change from Capcom’s usual release scheduled and it is possible the game is not as far along as we had thought. We will need to keep watch for more information on this matter.