Sometime this week - it seems like nobody knows or is allowed to say exactly when, from my reading - there is going to be a press-only event to play Kingdom Hearts III. Obviously, we're not quite "pressy" enough to get that invite, but that's okay! Even from the outside looking in, there's some valuable information just in knowing that this event is going to occur. For one, having an event like this definitely implies that the "2018" release date is going to stick; we're almost halfway through the year, but it's definitely reasonable to assume now that they will manage to at least hit a holiday release. For another, the game must be coming together pretty well in Squenix' eyes, or else they wouldn't be taking the step to let people play a functional version of the game before E3 starts.
In any event, journalists who get a chance to play the game will be allowed to start posting their thoughts at 9am Eastern this coming Friday, May 18. We'll know then roughly how things are looking, and if they are given any other information, like a release window or announcement that Steamboat Willie is the Big Bad, at that time.
Source:
Gematsu