I asked Chase via phone if they had any info on the end date knowing in the back of my mind that the 7/17 date was floating around online. They said their info was updated on July 14, and says ongoing offer, with no date mentioned. Of course it could end tomorrow, but who knows.
I asked in a branch yesterday and they only had an 80k offer available and knew nothing of a 100k offer, so that wasn’t any help either.