Recommendations / best practices for user tasks and (external) task list application

The way we “integrated” formio is not using Camunda Tasklist in any way. So no plans to provide a release there, as the use cases are different.

Take a look at: Form Builder (Drag and Drop) + Form Server Validations - #9 by StephenOTT

and go to the SDK link and follow the readme (dev folder). You can deploy the microservices (including formio and camunda).