Unfortunately the release date for Kingdom Hearts III was not given during the Kingdom Hearts III Premiere, however Eurogamer claims that Nomura promises the date should be coming "early next month".
There was no firm release date announced at the Kingdom Hearts 3 Premiere event, but Nomura's official statement was that an announcement should be coming "early next month," so, probably just before E3. Nomura continued, "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." And as far as we can tell, they're sticking with a 2018 window, so if we were to guess, we'd say a November release date is looking fairly likely at this point.
No doubt Eurogamers claim of "just before E3" refers to the Los Angeles concert which takes place on June 9th! Hopefully attendees at the concert will be treated to the release date.
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