You can now add the next node from the "+" at an open connection point of a node, and insert a node from the "+" in the middle of an edge.
When dragging from the Palette or dragging an unconnected node, connectable locations are highlighted and the node is automatically connected where you release it. A node inserted into an edge pushes the preceding and following nodes apart, and added nodes are placed along the grid.
The button label has changed from "Add next process node" to "Add next node", and the insert button on edges has been updated to match the appearance of the add button on the node side.