After his meeting with President Obama, Bernie Sanders was still making noises about the primaries, but if you read between the lines just a little, it sounds like he's going to drop out after the Washington, DC primary next week:
Notice how now, he's talking about taking "issues" to the convention, not his campaign, and that he looks forward to "working with (Hillary Clinton) to defeat Donald Trump."
Tuesday is his off-ramp, and since it's too late for him to un-ruin Hillary's big night, I guess that's okay.
Update: Yeah, Obama just endorsed Hillary and announced he'll start campaigning next Wednesday. So, that's that.