The getting started link in devsuite leads to http://developers.redhat.com/devstudio-preview which redirects to https://access.redhat.com/articles/2255401

The very fact that it is named

Using JBoss Developer Studio 9.x's Container Development Kit Tooling 

- refers to CDK 2.0 and JBoss Developer Studio 9.0 - looks suspicious. There might not be much difference to the current workflow, but it definitely is worth updating, especially since the devsuite installer is no longer a Technology Preview.