Cluster and app management services in Docker Cloud are shutting down on May 21
We are extremely worried about the future of Docker Swarm as well. 
We love Swarm - but we are seeing most work out of the Docker team is to give  a migration path to kubernetes. A huge number of docker swarm networking bugs are not being worked on.<p>We will be happy if Docker talks about Swarm becoming a management UX for K8s - but we need visibility. These are production orchestration systems. The migration path is not easy.<p>And seeing what Docker Co is doing with Cloud, it is not very comforting to trust that they will do the right thing with Swarm.