Add what's next section

docs/index.html

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 - Integration with Compose
 - Controlling Docker from a container
 - Node management
+- What's next?
 
 ---
 
@@ -5900,6 +5901,47 @@ Note: `docker system prune -a` will also remove *unused* images.
 
 class: title
 
+# What's next?
+
+## (What to expect in future versions of this workshop)
+
+---
+
+## Implemented and stable, but out of scope
+
+- [Docker Content Trust](https://docs.docker.com/engine/security/trust/content_trust/) and
+  [Notary](https://github.com/docker/notary) (image signature and verification)
+
+- Image security scanning (many products available, Docker Inc. and 3rd party)
+
+- [Docker Cloud](https://cloud.docker.com/) and
+  [Docker Datacenter](https://www.docker.com/products/docker-datacenter)
+  (commercial offering with node management, secure registry, CI/CD pipelines, all the bells and whistles)
+
+- Network and storage plugins
+
+---
+
+## Work in progress
+
+- Stabilize Compose/Swarm integration
+
+- Refine Snap deployment
+
+- Demo at least one volume plugin
+  <br/>(bonus points if it's a distributed storage system)
+
+- ..................................... (your favorite feature here)
+
+Reminder: there is a tag for each iteration of the content
+in the Github repository.
+
+It makes it easy to come back later and check what has changed since you did it!
+
+---
+
+class: title
+
 # Thanks! <br/> Questions?
 
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