This is according to a report from Eurogamer who recently managed to get a hands-on session with the game and where they spoke to some of the developers behind it. They also quote the game’s producer Tetsuya Nomura who indicated that a release date for the game should be revealed next month just before E3.
According to Nomura, “Kingdom Hearts 3 is a title with many people working on it, so we are making final adjustments, but we are pretty firm on a certain date so we hope to reveal it next month.” The good news is that it appears that a 2018 release date is still very much on the cards, so that much gamers can take reassurance in.
In any case we’ll be keeping our eyes peeled for more information on when the game will be released, but as Eurogamer speculates, it seems that a November release is rather likely.