The way we create references from a BPMN Model to another was aligned with the way we reference CMMN and DMN models. You will now have the BPMN logo in the Reuse section of the BPMN ribbon. Previously, this functionality was under the Sub-Process drop-down in the same ribbon.
Collapsing an expanded sub process is now easier to do as it has its separate option in the Sub Process actions in the BPMN ribbon. Previously it was a side effect of another option.
Reported an error when trying to work with a BPMN model containing multiple non-call activity sub process referencing the same content.
Introducing the Definitive DMN Quick Start Program