User blog comment:CROWMETA13/What is Sam and Crowley plan in s11e9/@comment-26847591-20151122100837

I thin they're gonna release some specific beings out of some specific cage. ;)

As Sam has these visions of the cage and Crowley, as the king of hell, hasn't got Amara under controll anymore and as the following episode is called "The DEVIL is in the Details", I think it's definitely about freeing Lucifer and Michael.