Mine train is open....

[PixieDustFanatic]

According to Behind the Thrills. They posted a picture of the queue and people in it on twitter a few hours ago @BehindThrills. I have no more details than that.

 

[*NikkiBell*]

They've been doing cast member and family/friends rides for about a week now. Also, yesterday it was open for about an hour for non-CMs. Soft openings are sporadic, but yes, it's coming!

 

[YoungForever]

I just came back from WDW (9 day trip) -The "official" opening date is May 28th. I asked the CM standing out front if I could ride it and they said "no" - I asked on two separate days during my trip. There were people riding but they were "select CM" "testing" the attraction.