Board Thread:News and Announcements/@comment-26512791-20180421134126/@comment-29742364-20180504053132

I'm pretty sure the promo in this thread is from Australia. I'm assuming that the episodes are airing on the 7th, 'cause Steven Universe airs new episodes on Mondays - at least where I live.

And it may be a questionable source, but Wikipedia's episode list says May 7th.