Dimension Value Connections is found as a side panel inside the dimension editor (A in the image below) and it's possible to toggle between an advanced and a basic view (B in the image below).
Show where dimension values are used in valuetypes
It is possible to show in which valuetypes a specific dimension value (or set of dimension values) are used. This image shows all valuetypes where any dimension value (A) is used and which ones are used in each valuetype (B).
Delete valuetype rows with selected dimension value
It is also possible to delete rows in a valuetype using a specific dimension value as shown in the image below.